The "Last Week Tonight" host called out the president for creating an environment where "white nationalism and anti-immigrant hysteria ... can fester and indeed thrive.”

The "Last Week Tonight" host says there's really no comparison on a key trait.

The "Last Week Tonight" host confirmed speculation about a promo photo of the cast.

The "Last Week Tonight" comedian roasted the president for being palsy-walsy with "murderous autocrats" after a fresh sexual misconduct allegation.

The "Last Week Tonight" host has a plan to prevent deaths on Everest and still give people bragging rights.

The "Last Week Tonight" host says Democrats must impeach the president even if they know it won't succeed.

The comedian emphasized that a constitutional amendment would be safe from Donald Trump.

His heart-stopping "Last Week Tonight" report should come with a defibrillator — but that could be defective, too.

"Last Week Tonight" looks at how screwed up the coroner business is and what it would take to fix it.

The "Last Week Tonight" host teams up with the Science Guy to deliver an urgent message about the planet.

The host blasted so-called humane options for the death penalty on "Last Week Tonight."

The "Last Week Tonight" host offers a hilarious reenactment of a key moment described in the special counsel's report.

"Last Week Tonight" host recruits Michael Keaton, Bryan Cranston, Michael K. Williams and Richard Kind to take on the Sackler family.

Why would the president choose such terrible appointees? Trump wants people who “will do exactly what he tells them to do,” Oliver said.

The "Last Week Tonight" host colorfully compared the organization with the NFL, and it didn't fare well.

"The Daily Show" host even worked in a John Oliver impression.