“Trump is about to replace a liberal icon with an extremely conservative justice who’s been called the ‘female Antonin Scalia,'” Oliver said of Barrett.

John Oliver kicked off his main segment of Sunday’s Last Week Tonight by addressing the death of Ruth Bader Ginsburg on Sept. 18 and President Trump’s pick to replace her on the Supreme Court, Amy Coney Barrett.

Oliver played a CBS This Morning clip noting that Barrett “is a favorite of religious conservatives for her strong anti-abortion rights views and, if confirmed, would move the court to the right for a generation.”

“Trump is about to replace a liberal icon with an extremely conservative justice who’s been called the ‘female Antonin Scalia,'” Oliver said of the 48-year-old Barrett.

“If, and almost certainly when, Barrett is confirmed to the Supreme Court, the impact could be dire,” Oliver said. “In recent years, key cases have been decided by just one vote, from upholding the Affordable Care Act to preserving DACA to striking down an incredibly restrictive abortion law [in Louisiana]. Should those issues come before the court again, they could now easily go the other way.”

Oliver then noted that one Republican senator had declared to supporters in 2016 that he was going to block a justice confirmation if Hillary Clinton had become president. However, he said that Republicans now were showing their “blatant hypocrisy” by not keeping up that same “precedent” they’d set four years ago.

Watch the segment below.