Sen. Marco Rubio Marco Antonio RubioGOP lawmakers distance themselves from Trump comments on transfer of power McConnell pushes back on Trump: 'There will be an orderly transition' Graham vows GOP will accept election results after Trump comments MORE (R-Fla.) on Monday said the term "impeachable offense" has "lost all meaning" as more Democrats call for impeachment inquiries over 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's talks with Ukraine.

The clamor for impeachment among House Democrats has grown after President Trump reportedly pressed Ukrainian President Volodymyr Zelensky to investigate former Vice President 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 and his son.

"It is possible to do something that is wrong and not be an impeachable offense and people are throwing that term around so loosely it's lost all meaning," Rubio told CNN.

"I don't think he should've done it but that's a far cry from what some people around here are claiming to know as fact that frankly we don't know as fact," Rubio added, referring to the reported call between the two leaders.

Sen. Marco Rubio: "It is possible to do something that is wrong and not be an impeachable offense and people are throwing that term around so loosely it's lost all meaning." pic.twitter.com/BTHQyySFGq — The Hill (@thehill) September 24, 2019

Several Democrats have called for an impeachment inquiry following reports of the call with Zelensky and amid subsequent reports that Trump withheld military aid to the country ahead of the call.

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Trump has said that he spoke about Biden during the conversation with Zelensky.

On Tuesday, the president also confirmed he withheld funds from Ukraine but denied that the action was expressly tied to a probe into the Bidens. He said instead he wanted European countries to give more to help Ukraine combat Russian aggression.

Trump's communication with Ukraine has come under scrutiny after an intelligence whistleblower filed a complaint regarding the situation.