A Republican Party press release — put out minutes after Trump signed a health care executive order — admitted that Obamacare has expanded health insurance to millions of Americans.

Minutes after Donald Trump signed an executive order designed to hurt Americans and their health care, his party made a huge mistake and admitted that Obamacare has been an amazing success.

Seeking to reinforce Trump, Republican National Committee chairwoman Ronna McDaniel released a statement noting, “Trump continues to make good on his promise to the 28 million Americans left behind by failures of Obamacare.”

In 2009, when President Barack Obama was sworn in, the number of uninsured Americans was 46 million.

In other words, Republicans are conceding that Obamacare reduced the number of uninsured Americans by 18 million.

The concession completely undermines the rhetoric Republicans have employed for years. Trump has referred to the health care law as a “disaster,” and his party has mounted dozens of attempts to repeal the law, falsely claiming that it hasn’t worked.

That was never true, and now they’ve inadvertently admitted it.

As Trump and the GOP attack Obamacare, it continues to increase in popularity, stymying their efforts to repeal it. In the most recent polling, Obamacare is at an all-time high.

And why wouldn’t it be? Even Republicans know it has worked millions of times over.

Their own proposals would increase the number of uninsured Americans, moving the country backward, and leaving millions more behind and without care. By their own standards, keeping Obamacare is the best way of achieving the goal of reducing the number of uninsured people.

We know this because Republicans just admitted that it worked.