WASHINGTON (AP) — Whatever happens next, don't call it impeachment.

House Democrats have been careful not to rush to impeachment proceedings against President Donald Trump in the aftermath of Robert Mueller's report, despite calls to do so by high-profile lawmakers and 2020 presidential contenders. But as Congress resumes Monday, the Democratic oversight and investigations agenda is starting to look a lot like the groundwork that would be needed to launch an impeachment inquiry. At some point, it's a political difference rather than a practical one.

"I don't think there's a magical moment at which proceedings become 'really' impeachment proceedings," said Cornell Law School professor Josh Chafetz.

The Judiciary Committee is scheduled to hear testimony from Attorney General William Barr on Thursday, despite resistance from the administration. The Oversight Committee has reached an agreement with the White House for testimony this week on security clearances. The Intelligence Committee is probing Trump's financial dealings. And the Ways & Means Committee is pursuing Trump's tax returns.

"The House has such broad oversight powers that it really doesn't matter whether they're geared toward impeachment, toward legislating, toward overseeing the functioning of the executive branch, etc.," Chafetz said. "At the end of the day, for the purposes of the powers available to the House, I don't think it makes much of a difference whether they use the word 'impeachment' or not."