Senate Republicans are set to be thrown into the middle of a high-profile fight over impeachment and’s efforts to investigate former Vice President

After two weeks out of town, and largely away from the national media, GOP lawmakers are poised to be bombarded with questions when they return to Washington on Tuesday.

Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyGOP lawmakers distance themselves from Trump comments on transfer of power The Hill's 12:30 Report: Ginsburg lies in repose Top GOP senators say Hunter Biden's work 'cast a shadow' over Obama Ukraine policy MORE (R-Iowa) said he hadn’t heard much about impeachment as he was traveling in Iowa during the break, but warned of a looming “impeachment cloud” in the capital.

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“That’s all you hear about in Washington, D.C. ... Washington is all about politics,” Grassley said during a conference call with reporters when asked about impeachment.

The spotlight comes as Republicans are already facing multiple tension points with Trump, including his decision to pull back troops in northern Syria and a potential veto override attempt as soon as this week on a resolution ending his emergency declaration tied to the U.S.-Mexico border wall.

Republicans, who have been scattered across the country during the congressional recess, will have their first chance to talk as a caucus on Wednesday, when they’ll hold their first closed-door lunch.

Senate Republicans have largely lined up behind Trump in knocking House Democrats' impeachment probe. Democrats are investigating Trump’s efforts to pressure Ukraine to investigate Biden, as well as allegations that he held up aid as part of the effort.

Though several polls have shown overall support for impeaching Trump to be ticking upward, Republicans remain firmly opposed to removing him from office. A Fox News poll released last week found that 51 percent support impeaching Trump. By comparison, according to the same poll, only 13 percent of Republicans support removing Trump from office.

But GOP senators have simultaneously contradicted each other about whether or not it was OK for Trump to ask a foreign government to investigate a political rival.

Matt Mackowiak, a GOP strategist, said the White House has been “pretty uneven” itself on messaging, complicating the ability for lawmakers to know how to respond.

“There's not been a unified message or strategy, and I think the White House is to blame for a lot of that, and I would blame really more the president than anyone else,” he added.

Some, including close allies of Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellDemocratic senator to party: 'A little message discipline wouldn't kill us' House to vote on resolution affirming peaceful transition of power Republican lawyers brush off Trump's election comments MORE (R-Ky.), have argued that while Trump’s call for a foreign government to investigate a rival was inappropriate, they don’t believe it warrants impeachment.

“Do I wish President Trump hadn’t raised the issue with the Ukrainian president? Yes,” Sen. John Cornyn John CornynHillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Lawmakers introduce legislation to boost cybersecurity of local governments, small businesses On The Trail: Making sense of this week's polling tsunami MORE (R-Texas), a member of leadership who is up for reelection, wrote in a fundraising email. “But really, is it right for Democrats to now call for his removal from office over this?”

Sen. Rob Portman Robert (Rob) Jones PortmanMcConnell locks down key GOP votes in Supreme Court fight Romney undecided on authorizing subpoenas for GOP Obama-era probes Congress needs to prioritize government digital service delivery MORE (R-Ohio), a counselor to McConnell, told an Ohio newspaper that it was “wrong” for Trump to bring up Biden with Ukraine, but that he didn’t view it as an impeachable offense.

“It’s inappropriate for the president to be talking with foreign governments about investigating his political opponents, but impeachment would be a mistake,” added Sen. Lamar Alexander Andrew (Lamar) Lamar AlexanderPelosi urges early voting to counter GOP's high court gambit: 'There has to be a price to pay' Graham: GOP has votes to confirm Trump's Supreme Court nominee before the election The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE (R-Tenn.), a retiring senator who is viewed as close to McConnell.

Alexander added that because he would be a juror in a potential impeachment trial, he wouldn’t comment again until the fight comes to the Senate.

Any effort to preemptively quash any impeachment questions could be a difficult stance to maintain once back in Washington.

Some senators tried to sidestep questions in their home states, with a few of the encounters with reporters going viral.

Senate Foreign Relations Committee Chairman Jim Risch James (Jim) Elroy RischWhy the US should rely more on strategy, not sanctions Davis: The Hall of Shame for GOP senators who remain silent on Donald Trump Senators blast Turkey's move to convert Hagia Sophia back into a mosque MORE (R-Idaho) caught the attention of national reporters after he refused to answer a question about Trump asking a foreign government to investigate Biden.

When a reporter started to bring up the issue, Risch interrupted, saying, “I’m not going to do an interview on that.”

“I’m not going there. If you want to have an interview with me about the business center, please do so,” Risch told Boise State Public Radio.

Sens. Joni Ernst Joni Kay ErnstOn The Trail: Making sense of this week's polling tsunami Tillis appears to reinforce question about COVID-19 death toll The power of incumbency: How Trump is using the Oval Office to win reelection MORE (R-Iowa) and Cory Gardner Cory Scott GardnerBreaking the Chinese space addiction Trump dumbfounds GOP with latest unforced error Billionaire who donated to Trump in 2016 donates to Biden MORE (R-Colo.), who are both up for reelection next year, also dodged questions.

Ernst, pressed during a town hall hours after Trump publicly called for China and Ukraine to investigate the Bidens, demurred, saying that “the president is going to say what the president is going to do.”

Gardner, viewed as the most vulnerable GOP senator up for reelection, sidestepped several questions during an interview with local reporters. Instead, he knocked House Democrats for establishing a “partisan process” and accused reporters of only focusing on politics.

A large swath of the caucus, including McConnell, haven’t commented during the recess about Trump’s rhetoric.

But that tactic will be next to impossible in the Capitol this week with a swarm of reporters asking questions.