The word "impeach" probably wasn't something you'd heard spoken all that much before 2016.
Nowadays it's everywhere. But what does it actually mean?
"It is true that many people don't fully understand what impeachment involves," explains John Oliver in the clip above. "So we thought tonight might be a good time to discuss what it is, why it may be warranted, and what the risks might be in carrying it out."
As Oliver breaks down in his latest Last Week Tonight segment, impeachment is no simple matter. It requires a certain number of votes in both the House of Representatives and the Senate. The latter would mean 20 republican senators would need to go against Trump -- making it pretty unlikely that he'd actually end up leaving office.
But, as Oliver says, that doesn't mean we should do nothing.
"I can't guarantee that impeachment will work out the way that you want it to, because it probably won't," he finishes. "But that doesn't mean that it's not worth doing.
"Because if nothing else, we'd be standing by the basic, fundamental principle that nobody is above the law."
