On a Monday, September 21, 2026, Senator Curtis directed his formal appeal to Senate Judiciary Committee Chair Chuck Grassley, a Republican, and ranking member Dick Durbin, a Democrat, asserting the urgent need for the legislative body to scrutinize "the use of presidential family relationships for private financial benefit, preferential treatment, or access by domestic and foreign interest." This broad mandate signals a desire to move beyond partisan targeting and establish clear ethical boundaries for those intimately connected to the nation’s highest office. To facilitate a thorough examination, Curtis explicitly called for the issuance of subpoenas for both Donald Trump Jr. and Hunter Biden, indicating an intent to compel testimony and access potentially relevant financial records.

The Utah lawmaker meticulously outlined his specific concerns regarding Donald Trump Jr., highlighting several areas he believes warrant congressional inquiry. A prominent point of contention is Trump Jr.’s reported acceptance of gifts from Russian oligarch Umar Kremlev in connection with his wedding. While President Donald Trump later stated that his son had repaid Kremlev for what was described by Trump Jr. and his wife as a "generous wedding gift," the very nature of such an exchange with a foreign national raises immediate ethical questions about influence and transparency, particularly given the ongoing scrutiny of foreign interactions with presidential families.

Beyond traditional gifts, Senator Curtis’s letter delved significantly into Donald Trump Jr.’s involvement in the cryptocurrency industry. He cited Trump Jr.’s "active promotion of family-backed cryptocurrency ventures" as a critical area for investigation. This concern echoes broader apprehension among lawmakers, particularly Democrats, about the Trump family’s increasing entanglement with digital assets. Previous calls for probes have centered on various initiatives, including a controversial "memecoin" associated with the Trump brand, the family’s World Liberty Financial business, and a substantial $500 million deal reportedly linked to Abu Dhabi’s royal family. These ventures, critics argue, could represent significant conflicts of interest, potentially leveraging the prestige and influence of the presidency for private financial enrichment. The sheer scale of President Trump’s reported earnings from digital asset ventures, totaling an estimated $1.4 billion in 2025, further fuels these ethical debates, prompting questions about the appropriate intersection of public office and private financial speculation in a nascent and volatile market.

Furthermore, Curtis pointed to Donald Trump Jr.’s advisory roles with prediction market platforms. These platforms, which allow users to bet on future events, fall under the regulatory purview of the Commodity Futures Trading Commission (CFTC). An advisory role in such a sector, especially for a presidential family member, raises questions about potential insider information, market manipulation, or undue influence on regulatory processes. The intersection of emerging financial technologies, high-stakes political connections, and the need for robust regulatory oversight forms a complex landscape that Senator Curtis believes requires urgent congressional attention.

Turning his focus to Hunter Biden, Senator Curtis advocated for a parallel investigation into his "substantial business with foreign entities" and any instances where his relationship to the presidency was "invoked or understood to provide value." These allegations resonate with long-standing criticisms and investigations surrounding Hunter Biden’s international business dealings, particularly in countries like Ukraine and China. While Hunter Biden has consistently denied involving his father in his business affairs, the perception of leveraging family connections for personal gain has been a persistent theme in the political discourse surrounding him.

Republican senator calls for probe into US presidents’ sons, citing crypto ventures

The Utah Senator also highlighted a recent and highly controversial development: President Joe Biden’s pardon of his son in December 2024. The pardon, which broadly covered crimes Hunter Biden "committed or may have committed or taken part in over the last decade," added another layer of complexity and ethical concern. Curtis’s inclusion of this detail in his letter underscores the view that such an action, while within a president’s constitutional powers, can raise questions about executive privilege, fairness, and the appearance of impropriety when applied to a direct family member facing public scrutiny for his business activities.

Senator Curtis articulated a clear and non-partisan objective for the proposed inquiry. "The purpose of such an inquiry should be straightforward: establish the facts, determine whether existing ethics, disclosure, or anti-corruption laws apply, and identify reforms necessary to prevent the presidency from becoming a vehicle for private enrichment by those closest to it," he stated. This framing suggests a desire to establish systemic protections rather than merely prosecuting individual wrongdoing, aiming to safeguard the integrity of the presidency itself. The ultimate goal is to reinforce public trust and ensure that the nation’s highest office remains untainted by the appearance or reality of personal financial exploitation by those within its immediate orbit.

The call for this investigation arrives at a politically charged moment, just over a week after Senate Republicans failed to garner sufficient Democratic support to advance the Digital Asset Market Clarity Act. This proposed legislation was designed to establish much-needed market structure rules for the nascent crypto industry. The political impasse highlighted the deep divisions within Congress regarding cryptocurrency regulation, particularly when intertwined with presidential politics. A key sticking point for some Democrats, as articulated by Senator Richard Blumenthal, was the concern that President Trump was "using crypto to turn the presidency into a profit generating machine." Despite Republican claims that President Trump had agreed to stronger ethics provisions within the bill affecting his crypto investments, many Democrats argued that these measures were insufficient to prevent potential corruption, further demonstrating the politicization of digital asset policy.

Senator Curtis, currently serving his first term in the Senate, is not up for re-election until 2030, suggesting that his move is less about immediate electoral gain and more about a broader stance on governmental ethics and transparency. His actions reflect a growing, albeit often partisan, consensus that the financial activities of presidential families require greater scrutiny to maintain public confidence in the impartiality and integrity of the executive branch.

The broader implications of Senator Curtis’s request extend beyond the immediate fates of Donald Trump Jr. and Hunter Biden. This push for investigation is part of an ongoing national dialogue about ethics in public service, the pervasive influence of money in politics, and the challenges of regulating new financial frontiers like cryptocurrency. The unique position of presidential family members, who often operate in a grey area between private citizen and public figure, makes their financial dealings particularly sensitive. While all individuals are entitled to pursue legitimate business, the public expectation is that these activities should not be perceived as leveraging a presidential connection for undue advantage, either domestically or internationally.

The proposed inquiry, if approved by the Senate Judiciary Committee, could set important precedents for how Congress addresses potential conflicts of interest and ethical lapses involving presidential families in the future. It highlights the inherent tension between personal enterprise and public service, especially when the lines become blurred by proximity to immense power. The outcomes of such an investigation could lead to new ethics, disclosure, or anti-corruption laws, ultimately shaping the framework designed to prevent the presidency from becoming a vehicle for private enrichment and ensuring accountability for those closest to it. The public, through the lens of this congressional scrutiny, awaits clarity on whether existing safeguards are adequate or if new reforms are necessary to uphold the foundational principles of ethical governance.