In the four weeks since House Speaker Nancy Pelosi, D-Calif., launched the investigation, Trump has taken steps that have drawn more criticism, not less, repeatedly testing the loyalty of his stalwart Republican allies. His actions have both intensified the questions at the center of the inquiry and opened new areas of concern.
"It is his persona to surround himself with chaos," said Alice Stewart, a Republican strategist who advised Texas Sen. Ted Cruz's 2016 presidential campaign.
Chaos has indeed been a hallmark of Trump's presidency. Each controversy bleeds into the next — often so fast that the public doesn't have time to absorb the details of any one issue. Whether that is a deliberate Trump strategy or simply the consequence of Americans electing a highly unconventional, nonpolitician as commander in chief remains one of the fundamental questions of his presidency.
The most pressing question now is how the cascading controversies will impact Trump at one of his most vulnerable moments since taking office.
Already saddled by low approval ratings, he could face reelection with the dubious distinction of being just the third American president ever impeached. Though conviction and removal from office by the Republican-controlled Senate seems virtually impossible, Trump's handling of the coming weeks could linger with some of the voters he needs to hold in order to win in 2020.
His response thus far has been pulled from the standard Trump playbook : hurling deeply personal, sometimes vulgar, insults at his opponents, questioning the legitimacy of the investigations into his actions and distracting with other jarring decisions.
For example, there was his public call for China to investigate baseless corruption claims against Democrat Joe Biden just days after Democrats launched impeachment proceedings to probe Trump's similar request of Ukraine.
There are some signs that Trump's words and actions are being received differently, both in Washington and across the country, from other points in his presidency.
Polls now show more Americans in favor of opening the impeachment inquiry than those who are opposed, a shift since earlier this year. A recent Pew Research Center poll found that 54% of Americans approved of the House decision to conduct an inquiry, while 44% disapproved. In a Pew poll conducted a few weeks earlier, the public was evenly divided on the question.
A few prominent Republicans have moved in favor of the investigation, which centers in part on whether Trump used his office for personal political gain by asking Ukraine to investigate the unfounded accusations against former Vice President Biden.
John Kasich, the former Republican governor of Ohio, is among the Republicans who now back an impeachment inquiry, though he told The Associated Press in an interview that he isn't ready to call for Trump's removal from office.
"This is an extremely serious matter," Kasich said. "I wrestled with it for a very long time."
Kasich was persuaded by the White House's shifting story on why Trump withheld $400 million in military aid for Ukraine, one of the issues under investigation by the House.
After insisting there was no quid pro quo at play — and allowing Republicans to use that as a rationale for opposing the impeachment inquiry — acting White House chief of staff Mick Mulvaney said Thursday that one of the reasons the aid was held up was that Trump wanted Ukrainian officials to investigate a debunked conspiracy involving the Democratic National Committee. Mulvaney later tried to back away from that statement.
His televised news conference left some Republicans flabbergasted. Many in the party were already reeling from Trump's decision to withdraw American troops from Syria, allowing Turkey to move into the country and attack Kurdish forces aligned with Washington. Reliable Trump allies such as Senate Majority Leader Mitch McConnell, R-Ky., and Sen. Lindsey Graham, R-S.C., panned the president's move as dangerous and deeply flawed.
And Mulvaney opened his news conference by announcing another controversial decision: Trump plans to host world leaders next year at his golf resort near Miami, putting him in position to personally profit from his office. Some Republicans found the move difficult to defend as well.
"I am not surprised at all that the president wanted to hold the G-7 at Doral. Never occurred to me that he would want to do anything different," Stewart said. "I am surprised there's no one in there who would advise him against doing that."
After two days of intense criticism for his choice of Doral, the president tweeted late Saturday that he would begin the search for a new site "based on both Media & Democrat Crazed and Irrational Hostility." In fact, the criticism had been bipartisan.
For now, the Republican frustration with Trump's actions over the past few weeks isn't affecting the party's views on the impeachment investigation, which is opposed by the majority of GOP lawmakers and voters.
"Republicans have already shown that they're compartmentalizing this," said Brendan Buck, an adviser to former House Speaker Paul Ryan, R-Wis. "They're able to be very upset about Syria in the morning and rationalize the other issues in the afternoon."
Associated Press writer Alexandra Jaffe in Des Moines, Iowa, contributed to this report.
EDITOR'S NOTE — Washington Bureau Chief Julie Pace has covered the White House and politics for The Associated Press since 2007. Follow her at http://twitter.com/jpaceDC
An AP News Analysis