Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyCollins says she will vote 'no' on Supreme Court nominee before election The Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week Gardner signals support for taking up Supreme Court nominee this year MORE (R-Iowa) joked at a Tuesday event that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE would have a lot fewer worries if his tweets were first checked by first lady Melania Trump Melania TrumpMelania Trump: Ginsburg's 'spirit will live on in all she has inspired' The Hill's 12:30 Report - Presented by Facebook - You might want to download TikTok now Warning label added to Trump tweet over potential mail-in voting disinformation MORE.

"The president could solve all of his problems if he just showed his wife the tweet before he punches the send button," Grassley quipped when the moderator noted that Trump is tweeting more about special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE than the push for criminal justice reform in a bill co-sponsored by Grassley.

"Couldn't we all," agreed Sen. Dick Durbin Richard (Dick) Joseph DurbinTumultuous court battle upends fight for Senate McConnell focuses on confirming judicial nominees with COVID-19 talks stalled Senate Republicans signal openness to working with Biden MORE (D-Ill.), another of the bill's co-sponsors.

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The president's frequent and often bombastic tweeting has been a source of frustration for many conservatives, including Grassley.

In September, the Senate Judiciary Committee chairman tweeted that he was praying Trump could be more disciplined in his discourse in the run up to the midterm elections.

"My prayer is that our President can be as disciplined in his discourse and speeches like last two [weeks before] his election," Grassley tweeted. "Then we will be successful in next two months like he was successful."

The GOP emerged from the midterms with a greater majority in the Senate but significant losses in the House.

Pundits on the right and the left have said Trump's heated rhetoric contributed to the GOP's losses, driving away suburban voters.

On Monday, the president unleashed a series of tweets lambasting Mueller's plea agreement with Trump's former lawyer Michael Cohen.

“Michael Cohen asks judge for no Prison Time.” You mean he can do all of the TERRIBLE, unrelated to Trump, things having to do with fraud, big loans, Taxis, etc., and not serve a long prison term? He makes up stories to get a GREAT & ALREADY reduced deal for himself, and get..... — Donald J. Trump (@realDonaldTrump) December 3, 2018

....his wife and father-in-law (who has the money?) off Scott Free. He lied for this outcome and should, in my opinion, serve a full and complete sentence. — Donald J. Trump (@realDonaldTrump) December 3, 2018

Cohen pleaded guilty last week to lying to Congress regarding the timing of the Trump Organization's efforts to build a tower in Russia.