Sen. Ron Johnson Ronald (Ron) Harold JohnsonThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' The Hill's 12:30 Report: Ginsburg lies in repose CHC leaders urge Senate to oppose Chad Wolf nomination MORE (R-Wis.), a member of the Senate Foreign Relations Committee, said he will lay out in a letter his telling of events related to the foreign aid to Ukraine that was held up and is now a central part of the impeachment inquiry.

"I got a letter last night from Reps. [Jim] Jordan [R-Ohio] and [Devin] Nunes [R-Calif.] asking for, basically, my telling of events. I'll be working on that today. I will lay out what I know," Johnson said Sunday on NBC's "Meet the Press."

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He said he won't be called to testify, but he will reply to his GOP colleagues' request to tell his version of what happened, "which is difficult to do in eight or 10 minutes on a show like this."

Johnson defended 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 and said Trump did not push Ukraine to publicly announce investigations before supplying the aid.

Johnson said Trump "completely denied there is any kind of arrangement that Ukraine had to do something before he released that funding" when he spoke with him in August.

EXCLUSIVE: @SenRonJohnson says that in his Aug. 31 call with Pres. Trump, he "completely denied there is any kind of arrangement that Ukraine had to do something before he released that funding." #MTP #IfItsSunday pic.twitter.com/J74uDthYPC — Meet the Press (@MeetThePress) November 17, 2019

Johnson and Sen. Chris Murphy Christopher (Chris) Scott MurphyDemocratic senator calls for 'more flexible' medical supply chain to counter pandemics The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon GOP chairman to release interim report on Biden probe 'in about a week' MORE (D-Conn.) were the bipartisan Senate team charged with delivering aid to Ukraine.

Murphy told NBC's Chuck Todd Charles (Chuck) David ToddMurkowski: Supreme Court nominee should not be taken up before election Republican senator says plans to confirm justice before election 'completely consistent with the precedent' Sunday shows - Trump team defends coronavirus response MORE that Ukrainian President Volodymyr Zelensky knew the aide was suspended on Sept. 5. At that time, Murphy said he didn't know of "all these back channels that were happening regarding this extortion campaign."

"The president was trying to use the power of his office to influence the upcoming election," Murphy said.