Sen. Rand Paul (R-Ky.) said he would force votes to call Hunter Biden and others as witnesses in the Senate impeachment trial if Republicans support Democrats’ impeachment witness demand.

“My colleagues can’t have it both ways. Calling for some, while blocking others. If we are going to give a platform to witnesses the Dems demand, I look forward to forcing votes to call Hunter Biden and many more!” Paul tweeted on Monday night, Jan. 13.

The Kentucky senator attached a Politico article, in which he sent a warning to his Republican colleagues as they began debating whether to hear from witnesses like former national security adviser John Bolton as requested by Senate Minority Leader Charles Schumer.

“Don’t think you can just vote for Bolton and not the witnesses Trump wants,” Politico quoted Paul who said to senators at a party lunch last week. He said that incumbent senators’ conservative base would be enraged if vulnerable lawmakers were seen as undercutting President Trump.

According to The Hill, Senate Republicans are privately haggling over the rules resolution for President Donald Trump’s imminent impeachment trial.

Sen. Susan Collins (R-Maine) last week said she was working with a small group of Republicans to ensure the resolution allows for both President Trump’s team and House impeachment managers to call witnesses.

Meanwhile, Sen. Mitt Romney (R-Utah) said he supports the Clinton model and wants to hear from Bolton during the trial.

Bolton, one of four witnesses requested by Democrats, said he would testify if subpoenaed.

Senate Majority Leader Mitch McConnell (R-Ky.) has said he does not believe either side should call witnesses and warned Democrats last month that if they successfully call a witness, Republicans could also try to call witnesses, including Hunter Biden.

House Speaker Nancy Pelosi (D-Calif.) explained on the weekend that she chose to withhold the articles of impeachment against President Donald Trump from the Senate to pressure Senate Republicans to accept Democrats’ requests to call witnesses for a fair trial.

“We wanted the public to see the need for witnesses, witnesses with firsthand knowledge of what happened,” Pelosi said in an interview with ABC News.