There’s a laundry list of things President-elect Donald Trump could do on his own to modify the Affordable Care Act, even if Congress gets hung up on exactly how to repeal and replace it.

While the Affordable Care Act is a lengthy piece of legislation, the Obama administration issued many more pages of regulations and guidance explaining exactly how it should be implemented. The new administration, under the direction of Trump, could amend or get rid of those directives as soon as it’s in place next year, and thus significantly alter the law without having to wait for Congress.