Democratic presidential candidate Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE is eyeing reforms to strengthen enforcement of the Emoluments Clause of the Constitution and prevent presidents from using pardons to protect themselves.

The former Texas congressman's presidential campaign said in a statement on Tuesday that O'Rourke would make any presidential attempt "to secure or acceptance of assistance from a foreign power for personal profit or political gain a federal crime through both civil and criminal liability."

His plan would also classify non-financial assistance from foreign countries in U.S. elections as an emolument.

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O'Rourke has also proposed a constitutional amendment banning presidents from using pardons on people linked to investigations in which the president or a family member of the president is a subject, witness or target.

The statement from O'Rourke's campaign follows recent revelations that President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE asked Ukraine to look into Democratic presidential candidate Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE. In response, House Democrats launched an impeachment inquiry into Trump.

More recently, acting White House chief of staff Mick Mulvaney Mick MulvaneyOn The Money: House panel pulls Powell into partisan battles | New York considers hiking taxes on the rich | Treasury: Trump's payroll tax deferral won't hurt Social Security Blockchain trade group names Mick Mulvaney to board Mick Mulvaney to start hedge fund MORE said that the next Group of 7 (G-7) summit would be hosted at President Trump's Doral resort, but said the president would not profit from the move. The plan has since reportedly been scrapped and the U.S. is expected to host the meeting of foreign leaders at Camp David.

The new statement from the O'Rourke campaign did not specifically address either Ukraine or the G-7 summit, but did refer to Trump's "illegal actions."

“Congress should act swiftly to impeach and to remove President Trump from office in light of his illegal actions," O'Rourke said in the statement.

"But it is also time to pass additional reforms that heed Washington’s advice so that Trump—and every president who follows—will never be above the law, or able to welcome foreign interference in our democracy,” he added.

The Emoluments Clause of the Constitution states that people holding office should not "accept of any present, Emolument, Office, or Title, of any kind whatever, from any King, Prince, or foreign State" without congressional approval.

O'Rourke is among more than a dozen candidates running for the 2020 Democratic presidential nomination.