House speaker Nancy Pelosi, backed by House Judiciary Committee chairman Jerrold Nadler, is taking a step-by-step approach to the confrontations with Mr Trump.
A rare bipartisan commitment between the White House and Congress to make a sweeping agreement on infrastructure has dramatically collapsed.
Trump and Democrats who control the House are engaged in a high-stakes power struggle over their ability to investigate him, with the president increasingly asserting that his advisers need not respond to lawmakers' inquiries. This is what I was alluding to in the first paragraph when I referenced the "legitimate political questions surrounding impeachment".
"I walked into the room and I told Senator Schumer and Speaker Pelosi, 'I want to do infrastructure".
Trump made the comments in a supposedly impromptu press conference at the White House after he cut short a meeting with Democrats after just a few minutes and stormed out. It's clear this was not a spontaneous move on the president's part.
"In any event, I pray for the president of the United States".
"They are looking for records about minors, about in-laws", said Strawbridge, claiming that even information about Trump's grandchildren could be swept up in the subpoenas.
Schumer said Trump was forced to run away when he could not say how he would pay for an infrastructure bill.
Trump didn't mention the USMCA during the Rose Garden announcement.
Congressional Democrats have picked up the mantle of the inquiry, issuing a flurry of subpoenas. Of greater immediate concern, however, are the status of negotiations on approving a new spending plan and raising the debt ceiling.
Only after the Democrats' investigations end will he work with them on infrastructure, lowering drug prices and other matters.
If the current course continues, however, the two sides will instead be fighting over who should shoulder the most blame.
The committee asks for both to provide documents by June 4, for Hicks to appear on June 19 and Donaldson on June 24.
"I have no doubt that the President committed impeachable acts, but there's a reason that the founders gave that decision to Congress", said Khanna, according to a Democratic source.
McGahn is the most-cited witness in Mueller's Trump-Russia investigation report, recounting the president's attempts to interfere with the probe.
Committee Chairman Jerry Nadler said each of the incidents that McGahn described to Mueller "constitutes a crime", and that McGahn must testify.
The decision of ex-White House counsel Don McGahn not to testify in front of the House of Representatives Judiciary Committee on Tuesday (local time) deepens Mr Trumps fight with Democratic politicians.
Mr. McGahn was due to appear before the House panel on Tuesday.
The panel has also authorized subpoenas to two other former White House officials - former Chief of Staff Reince Priebus and former chief strategist Steve Bannon - but it has not issued those subpoenas.
Democrats are encouraged by an early success in the legal battles, a Monday ruling by a federal judge against Trump on in a financial records dispute with Congress. Trump's team filed notice of appeal on Tuesday.
Media captionWhat does it take to impeach a president?
A growing number of Democrats have called for the launch of an impeachment process against Trump as frustrations build over the White House's refusal to comply with subpoenas for hearings and documents.
Nancy Pelosi came out of today's House Democratic caucus meeting talking tough, but perhaps carrying a soft gavel. "The argument that impeachment may not be good for [the Democratic Party] politically is a strong one".