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

Senator John Curtis, a Republican representing Utah, sent a letter to leaders of the Senate Judiciary Committee calling for an investigation into US President Donald Trump’s and former President Joe Biden’s sons, citing the former’s involvement in the crypto industry.

In a Monday letter to Senate Judiciary Committee Chair Chuck Grassley and ranking member Dick Durbin, Curtis said that the body should probe “the use of presidential family relationships for private financial benefit, preferential treatment, or access by domestic and foreign interest.” He also asked for subpoenas for Donald Trump Jr. and Hunter Biden, Joe Biden’s son.

The Utah lawmaker specifically called out Donald Trump Jr. for accepting gifts from Russian oligarch Umar Kremlev as part of his wedding, his “active promotion of family-backed cryptocurrency ventures” and advisory roles with prediction market platforms, as the companies are under the regulatory purview of the Commodity Futures Trading Commission. The president said last week that his son had paid Kremlev back for what Donald Trump Jr. and his wife called a “generous wedding gift.“

Curtis also called for a similar probe into Hunter Biden for “substantial business with foreign entities” and instances in which either man’s relationship to the presidency was “invoked or understood to provide value.” President Biden issued a pardon for his son in December 2024 for crimes he “committed or may have committed or taken part in over the last decade,” and Curtis noted that Hunter had “denied involving his father in his business dealings.“