After days of opposition and hours before the federal government was going to shut down, Trump signed a $2.3 trillion bill into law Sunday night to avert a government shutdown and extend $900 billion in coronavirus pandemic relief -- but millions of American will be impacted by his delay.

Trump’s Sunday night signature came after two critical unemployment programs lapsed over the weekend, leaving roughly 14 million Americans who have relied on the income without a week of benefits during the holiday season. While the current bill shells out $600 direct payments for most Americans, Trump is breaking from his party by continuing his push to bring that amount to $2,000.

In a Sunday night statement announcing he had signed the bill, Trump -- who has sat on the sidelines of negotiations for months -- also called on Congress to make more revisions to cut down excess spending, saying "wasteful items need to be removed" from the bill and that he would send back a “redlined” version.

The move is forcing Senate Republicans, many who did not support more direct payments, to say whether they stand with Trump on increasing payments and revisiting the bill’s language or by their previous positions.

House Speaker Nancy Pelosi on Monday is bringing a vote on a stand-alone bill to increase economic impact payments to $2,000 to the House floor, and while it’s expected to pass the House, it’s unclear whether Senate Majority Leader Mitch McConnell will take up the measure in the Senate.

The president has no public events on his schedule as he continues his holiday from Mar-a-Lago, and threatens, via Twitter, a challenge to the counting of the Electoral College vote in Congress on Jan. 6.

Biden, meanwhile, is pressing forward with his transition with less than a month until his inauguration. The president-elect is slated to meet with members of his national security and foreign policy agency review teams on Monday and deliver afternoon remarks on their "findings and the key challenges his administration will inherit" from Wilmington, Delaware.

Former House Speaker Paul Ryan has emerged from retirement with a rare statement to weigh in on the controversy surrounding the certification of the electoral college votes this week, emphasizing that “voters determine the president” while warning “this self-governance cannot sustain itself if the whims of Congress replace the will of the people.”

“Efforts to reject the votes of the Electoral College and sow doubt about Joe Biden’s victory strike at the foundation of our republic,” Ryan noted. “It is difficult to conceive of a more anti-democratic and anti-conservative act than a federal intervention to overturn the results of state-certified elections and disenfranchise millions of Americans.”

Ryan added that the Trump campaign had “ample opportunity” to challenge the results but failed “from lack of evidence.”

"The legal process was exhausted, and the results were decisively confirmed. The Department of Justice, too, found no basis for overturning the result. If states wish to reform their processes for future elections, that is their prerogative. But Joe Biden’s victory is entirely legitimate.”

-ABC News' John Parkinson