An ongoing political feud about the future of the president reached an impasse between both sides of politics in the upper chamber of Congress on Dec. 23.

Republican and Democratic leaders in the Senate still cannot decide how to conduct a trial about the impeachment of Donald Trump.

Senate Majority Leader Mitch McConnell (R-Ky.) has not ruled out calling witnesses and is also in no hurry to seek new testimony while Senate Minority Leader Chuck Schumer (D-N.Y.) opposes conducting the trial without witnesses because that would be “Kafkaesque” and a “sham.”

McConnell has tried not to make promises he cannot keep and advised the president against seeking witness testimonials from Democratic presidential candidate Joe Biden, son Hunter Biden, and the anonymous whistleblower whose allegations started the whole impeachment process.

The senator is concerned calling them to testify could prolong the trial and further waste public funds. The General Accounting Office previously estimated in 2002 the criminal investigation of former President Bill Clinton and his wife Hillary cost taxpayers $70 million according to Fox News.

McConnell has already secured Republican support for his plan to impose a framework drawn from the 1999 impeachment trial of President Clinton.

“We haven’t ruled out witnesses,” McConnell told “Fox & Friends” according to The Associated Press. “We’ve said let’s handle this case just like we did with President Clinton. Fair is fair.”

However, House Speaker Nancy Pelosi (D-Calf.) has postponed sending articles of impeachment to the House recommended to the Senate because Minority Leader Chuck Schumer (D-N.Y.) is still debating how the trial should be run in the Senate.

The White House speculates Pelosi cannot keep delaying the trial for much longer, and the current stalemate between Senate leaders means a longer than expected delivery of the impeachment articles.

Trump criticized the impasse as “unfair” because Democrats are allegedly violating the Constitution, unnecessarily prolonging the pain of impeachment, and casting uncertainty on the timing of the vote widely expected to vindicate Trump.

“Pelosi gives us the most unfair trial in the history of the U.S. Congress and now she is crying for fairness in the Senate, and breaking all rules while doing so,” the president said on Twitter from his private club in Palm Beach, Florida, where he is vacationing according to the news agency. “She lost Congress once, she will do it again.”

White House officials have also questioned the Democratic Party’s claims that removing Trump was an “urgent” matter before the House impeachment vote and are pressuring Pelosi to send the articles of impeachment to the Senate.