It was probably just a misread of a teleprompter, but President Donald Trump began his much-awaited remarks on health care Monday by saying Obamacare became law 17 years ago.

Seventeen years ago Barack Obama wasn't a U.S. senator, much less the president.

In the opening of his speech delivered at the White House, Trump said, "For the past 17 years, Obamacare has wreaked havoc on the lives of innocent, hardworking Americans."

Later he did correctly refer to the Affordable Care Act, which was passed in 2010, with the phrase "for the past seven years."

Naturally on Twitter, the error did not go unnoticed.

Later in his speech, Trump placed the blame on the failure to repeal and replace the Affordable Care Act on senators of his own party.

"But so far, Senate Republicans have not done their job in ending the Obamacare nightmare. They now have a chance however to hopefully -- hopefully -- fix what has been so badly broken for such a long time and that is through replacement of a horrible, disaster known as Obamacare," Trump said.