President Trump Wednesday said his administration intends to block congressional investigations into his presidency by refusing to allow his aides to appear before their committees.

“We’re fighting all the subpoenas,” the president told reporters on the South Lawn of the White House. “Look, these aren’t impartial people. The Democrats are trying to win 2020.”

Congress has launched several investigations into the president, ranging from requests for his tax returns to subpoenas for documents and testimony from former White House officials, including former White House counsel Don McGahn.

“The subpoena is ridiculous,” Trump said. “We have been — I have been — the most transparent president and administration in the history of our country, by far. We just went through the Mueller witch hunt, where you had, really, 18 angry Democrats who hate President Trump. They hate him with a passion.”

Trump also said the special counsel Robert Mueller's report found “no collusion” and claimed it found “no obstruction.”

The report, which was released last Thursday, found no collusion between the Trump campaign and the Russian government but did not make a determination on whether the president committed obstruction of justice. While Mueller investigated several aspects of Trump's life and presidency, Democrats feel there are still questions that remain unanswered.

But Trump indicated he is not obligated to comply with further investigations, saying that Mueller had most likely looked at matters of interest to Democrats, like his taxes.

“Now we’re finished with it,” the president said. “And I thought after two years we'd be finished with it. No, now the house goes and starts subpoenaing. They want to know every deal I've ever done.”

Trump said the Mueller investigation was “enough” and insisted Congress now focus on bipartisan legislation.

“I say it's enough,” he said. “Get back to infrastructure. Get back to cutting taxes. Get back to lowering drug prices. That's what, really, that's what we should be doing.”