President Donald Trump has changed the presidency, but "not necessarily toward the positive," Sen. Ron Johnson, R-Wis., said Monday.
"I think so, not necessarily toward the positive either," Johnson, chairman of the Senate Homeland Security Committee, told WTMJ radio in Milwaukee.
But former Democratic President Bill Clinton also shifted the "behavior and the standard of the presidency," the second-term senator said.
"It's unfortunate," Johnson told host Steve Scaffidi. "I revere our Constitution. I revere these institutions, including the office of the presidency.
"It would be nice if everybody conducted themselves, I guess, the way we would here in Wisconsin," he said.
Johnson, 64, could not point to a specific incident regarding Trump's behavior, but he added "there has been a concerted effort" by Democrats "from Day 1 to sabotage this administration.
"I don't agree with everything he's doing, but I have to give him a great deal of credit," he told Scaffidi.
House Speaker Nancy Pelosi, D-Calif., last week announced an impeachment investigation into Trump's July 25 telephone call with Ukrainian President Volodymyr Zelenskiy and whether Trump suggested a probe of former Vice President Joe Biden.
Johnson told Scaffidi the memo of the call released by the White House last week showed no "quid pro quo" — adding he had "a lot of questions" about the Democrats and Ukraine.
"Everybody says, 'Well there's no evidence, all these things have been debunked,'" Johnson said. "[But] I have all kinds of questions dating back to Hillary Clinton's email scandal."
Johnson and Sen. Chuck Grassley, R-Iowa, asked Attorney General William Barr on Friday to investigate possible ties between Democrat Hillary Clinton and Ukraine.
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