Mitt Romney says Alejandro Mayorkas’s actions do not merit impeachment

Alejandro Mayorkas is not guilty of a high crime or misdemeanour, the Republican senator Mitt Romney said, making clear he will not vote to remove the US homeland security secretary from office if his impeachment goes to a trial.

“Secretary Mayorkas is following the position of his party and of the president who was elected,” Romney, from Utah and his party’s nominee for president in 2012, told reporters at the Capitol on Tuesday.

“We have pointed out that President Biden is for open borders, as are the Democrats, and Mayorkas is simply following that policy. It’s the wrong policy, it has a huge damaging effect on the country – but it’s not a high crime or misdemeanour.”

Republicans have zeroed in on undocumented migration and the southern border as campaign issues in an election year.

House Republicans impeached Mayorkas in February but have not yet formally sent the articles of impeachment across the Capitol to the Senate. On Tuesday, John Kennedy, a Republican senator from Louisiana, told reporters that process would now be delayed until Monday.

Under article two, section four of the US constitution, “the president, vice-president and all civil officers of the United States, shall be removed from office on impeachment for, and conviction of, treason, bribery, or other high crimes and misdemeanours”.

Debate over what exactly constitutes “high crimes and misdemeanours” is a constant of US political life.

Impeachment is meant to be rare: from the founding until Donald Trump only two presidents were impeached and both, Andrew Johnson and Bill Clinton, were acquitted at trial.

Donald Trump, however, was impeached twice: first for seeking to blackmail Ukraine for dirt on political rivals, second for inciting an insurrection, the