WASHINGTON – House Speaker Nancy Pelosi has introduced a new concept into the debate over President Donald Trump's actions: “self-impeaching.”

As Trump all but goads Democrats into impeachment proceedings, viewing the showdown as potentially valuable for his 2020 reelection campaign, Democrats are trying to show restraint. Their investigations are both intensifying but also moving slowly as Democrats dig into the special counsel's Trump-Russia report and examine Trump's finances and governance.

The more they push, the more Trump resists, making what Pelosi says is his own case for impeachment with his stonewalling of Congress.

“The president is self-impeaching,” she told her colleagues last week during a private caucus meeting, echoing comments she also aired in public. “He's putting out the case against himself. Obstruction, obstruction, obstruction. Ignoring subpoenas and the rest.”

She added, “He's doing our work for us, in a certain respect.”

There is no actual process for self-impeachment. It's a thought bubble more than a legal term. A pure Pelosi-ism, one that an aide says she coined herself.

But as a device, it's a way for Pelosi to frame the often complicated idea of the White House refusing to engage with Congress in the traditional process of checks and balances.

“Sometimes people act as if it's impeachment or nothing,” Pelosi told reporters. “No, it's not that. It's a path that is producing results and gathering information.”

In the aftermath of special counsel's investigation, the slow drip of congressional oversight also serves a dual purpose politically. It allows Democrats to keep impeachment proceedings at bay, despite calls to push ahead by the liberal flank.

They note the Watergate investigation dragged on two years before the House Judiciary Committee opened impeachment proceedings against President Richard Nixon. By the time articles of impeachment were drawn up, the third entry was Nixon's obstruction of Congress.

Rather than viewing Mueller's report as the end of the debate, Democrats in Congress have taken his findings as a green light to dig in with their oversight role.

“Our strategy right now is just to get to the truth and the facts,” said Rep. Jamie Raskin, D-Md., a member of the House Judiciary Committee.