WASHINGTON — As millions came to grips with the fact they could soon be left without health insurance, President Donald Trump and House Republicans gathered in the Rose Garden of the White House to celebrate what they view as a victory for the American people.

On Thursday afternoon, the Republican-led House narrowly passed a bill to repeal and replace significant parts of the Affordable Care Act, better known as Obamacare, a 2010 law that expanded coverage to about 20 million people.

And, as the pictures show, it was all fun and games for GOP leaders.

Carlos Barria / Reuters President Donald Trump gathers with Vice President Mike Pence, right, and gleeful congressional Republicans in the White House Rose Garden on Thursday after the House narrowly approved the American Health Care Act.

Mark Wilson via Getty Images President Trump congratulates jubilant House Republicans after they voted to repeal major parts of Obamacare.

That deliberate spectacle — Republican lawmakers chuckling at the prospect of passing into law a measure that would uninsure millions and weaken protections for those with pre-existing conditions — did not go unnoticed.

And in the end, it could come back to bite them, as campaign cash has already begun to roll in for their Democratic opponents.

Donald Trump and Republicans just celebrated voting to let thousands of Americans die so that billionaires get tax breaks. Think about that. pic.twitter.com/hbOp7k2TQe — Bernie Sanders (@SenSanders) May 4, 2017

I'll do what I can to make November 6, 2018 a dawn-to-dusk nightmare for the GOP. Fuck these smirking, entitled frauds. Tick tick tick. — Patton Oswalt (@pattonoswalt) May 4, 2017

This celebratory atmosphere over stripping health care from the sick is one of the most obscene political spectacles I've witnessed. #AHCA — Peter Daou (@peterdaou) May 4, 2017

Before Thursday’s vote, House Minority Leader Nancy Pelosi (D-Calif.) warned House Republicans that if they supported the measure they will “have this vote tattooed on them.” And after the vote, Democrats taunted their GOP colleagues by singing, “Na-na-na-na, na-na-na-na, hey, hey, hey! Goodbye!”

Rep. Adam Schiff (D-Calif.) told CNN’s Wolf Blitzer he expects Thursday will be the “one and only celebration” you’ll see from Republicans on this bill.

“Very shortly, I imagine, that [Congressional Budget Office] analysis is going to come out, and it’s going to likely show tens of millions of Americans lose their health care under this plan,” he told CNN. “And the image of those Republican members celebrating that loss of coverage for millions may very well come back to haunt them.”

Rep. Schiff: When CBO score likely shows millions will lose their health care coverage, image of Republicans celebrating will haunt them pic.twitter.com/EwHGcP6tN6 — The Situation Room (@CNNSitRoom) May 4, 2017

Chip Somodevilla via Getty Images Speaker of the House Paul Ryan (R-Wis.), left, laughs along with Republican House members after the vote to repeal the Affordable Care Act and cut off funding for Planned Parenthood.

Chip Somodevilla via Getty Images House Speaker Ryan, second from left, and House Republicans joyfully celebrate at the Capitol after the American Health Care Act vote Thursday.