The storming of the U.S. Capitol by supporters of President Donald Trump on Wednesday has prompted calls by some lawmakers to remove him from office before President-elect Joe Biden is sworn in on Jan. 20.

The chaotic scenes unfolded after Republican Trump, who has refused to commit to a peaceful transfer of power, addressed thousands of protesters and repeated unfounded claims that the election was stolen from him.

There are two ways to remove a president from office: the 25th Amendment of the U.S. Constitution and impeachment followed by a Senate conviction. In either scenario, Vice President Mike Pence would take over until Biden's inauguration.