It's not about disagreeing with his style. The GOP has actively worked to undermine the Muller investigation into whether or not Trump is compromised or colluded with Russia. If they really believe that there isn't any collusion, then the light of day should not bother them because the investigation would simply lay to rest any doubt about his legitimacy as President. However, this isn't what has happened, Trump's cronies have actively obstructed the investigation, lied to Muller's team, and tampered with witnesses. The GOP itself held what amounts to mock hearings in which they didn't even call all their own witnesses before announcing that there was no evidence of collusion. There is a huge amount of publicly available evidence that points towards collusion with Russia - and that's just what we know about.
So far in the Mueller investigation:
1) George Papadopoulos, former Trump campaign foreign policy adviser,
pleaded guilty in October to making false statements to the FBI.
2) Michael Flynn, Trump’s former national security adviser,
pleaded guilty in December to making false statements to the FBI.
3) Paul Manafort, Trump’s former campaign chair,
was indicted in October in Washington, DC on charges of conspiracy, money laundering, and false statements — all related to his work for Ukrainian politicians before he joined the Trump campaign. He’s pleaded not guilty on all counts. Then, in February, Mueller filed a
new case against him in Virginia, with tax, financial, and bank fraud charges.
- 7 counts in Washington, DC: One count each of conspiracy to defraud the United States, conspiracy to launder money, acting as an unregistered agent of a foreign principal, making false and misleading Foreign Agent Registration Act (FARA) statements, a false statements charge in connection with FARA, obstruction of justice, and conspiracy to obstruct justice.
- 18 counts in Virginia: 5 counts of filing false income tax returns, 4 counts of failing to report foreign bank and financial accounts, and 9 counts of bank fraud or bank conspiracy
4) Rick Gates, a former Trump campaign aide and Manafort’s longtime junior business partner, was indicted on similar charges to Manafort. But in February he agreed to a
plea deal with Mueller’s team, pleading guilty to just one false statements charge and
one conspiracy charge.
5-20) 13 Russian nationals and three Russian companies were indicted on conspiracy charges, with some also being accused of identity theft. The charges related to a Russian propaganda effort designed to interfere with the 2016 campaign. The companies involved are the
Internet Research Agency, often described as a “Russian troll farm,” and two other companies that helped finance it. The Russian nationals indicted include 12 of the agency’s employees and its alleged financier, Yevgeny Prigozhin.
21) Richard Pinedo: This California man
pleaded guilty to an identity theft charge in connection with the Russian indictments, and has agreed to cooperate with Mueller.
22) Alex van der Zwaan: This London lawyer
pleaded guilty to making false statements to the FBI about his contacts with Rick Gates and another unnamed person based in Ukraine.
23) Konstantin Kilimnik: This longtime business associate of Manafort and Gates, who’s currently based in Russia,
was charged alongside Manafort with attempting to obstruct justice by tampering with witnesses in Manafort’s pending case this year.
This doesn't even scratch the surface of his insecure communications, the acts of his children, the fact that he's sending his daughter on official state business, and I've lost track of how many times his family has been allowed to "amend" their security clearance documents as new information hits the media.