GOP Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeThe Memo: Tide turns on Kavanaugh Key GOP senators appear cool to Kavanaugh accuser's demand Gillibrand: Kavanaugh accuser shouldn't participate in 'sham' hearing MORE (Ariz.) blasted President TrumpDonald John TrumpLondon terror suspect’s children told authorities he complained about Trump: inquiry The Memo: Tide turns on Kavanaugh Trump to nominate retiring lawmaker as head of trade agency MORE minutes after a joint press conference with Russian President Vladimir Putin, calling his rhetoric "shameful."

Trump, during a closely watched press conference with Putin, took a swipe at special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE's probe and said both the United States and Russia were to blame for the current soured state of relations between them.

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"I hold both countries responsible. I think that the United States has been foolish. I think we've all been foolish. ... I think we're all to blame," he told a reporter at the press conference in Helsinki when asked if he held Russia accountable.

Trump also called Mueller's probe a "disaster" and downplayed Russia's meddling in the 2016 election.

Flake is one of several GOP lawmakers who immediately criticized Trump's comments during the press conference.

GOP Sen. Ben SasseBenjamin (Ben) Eric SasseMcConnell tamps down any talk of Kavanaugh withdrawal Senate approves 4B spending bill Grassley agrees to second Kavanaugh hearing after GOP members revolt MORE (Neb.) called them "bizarre and flat-out wrong."

While GOP Sen. Lindsey GrahamLindsey Olin Graham GOP senator: Kavanaugh accuser 'moving the goalposts' Collins: Kavanaugh accuser should 'reconsider,' testify on Monday Grassley willing to send staff to California to speak with Kavanaugh accuser MORE (S.C.) warned that Trump's rhetoric on election interference could paint the United States as weak and that the summit was a "missed opportunity."

"Missed opportunity by President Trump to firmly hold Russia accountable for 2016 meddling and deliver a strong warning regarding future elections. This answer by President Trump will be seen by Russia as a sign of weakness and create far more problems than it solves," he said in a tweet.

Neither Speaker Paul RyanPaul Davis RyanElection Countdown: Trump confident about midterms in Hill.TV interview | Kavanaugh controversy tests candidates | Sanders, Warren ponder if both can run | Super PACs spending big | Two states open general election voting Friday | Latest Senate polls On The Money: Midterms to shake up House finance panel | Chamber chief says US not in trade war | Mulvaney moving CFPB unit out of DC | Conservatives frustrated over big spending bills Nancy Pelosi: Will she remain the ‘Face of the Franchise’? MORE (R-Wis.) nor Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellKey GOP senators appear cool to Kavanaugh accuser's demand Trump hints at new executive action on immigration, wants filibuster-proof Senate majority The Hill's Morning Report — Sponsored by United Against Nuclear Iran — The Hill interviews President Trump MORE (R-Ky.) immediately commented.