When Barack Obama nominated Merrick Garland for the Supreme Court in 2016, presidential candidate Donald Trump, Senate Majority Leader Mitch McConnell and a whole bunch of Republicans successfully opposed the election year nomination. Now that President Trump faces the same objections from Democrats, he's singing an awfully different tune.

Trump announced Saturday that he is nominating Amy Coney Barrett to fill the Supreme Court seat of Ruth Bader Ginsburg, who died last Friday after a long battle with cancer. As Blavity previously reported, Barrett was one of several figures shortlisted by Trump to replace Ginsburg. She was appointed as a federal judge on the Seventh Circuit of the U.S. Court of Appeals in 2017 on Trump’s nomination. She was almost chosen for the Supreme Court by Trump in 2018 when Justice Anthony Kennedy retired according to The Washington Post. The Hill reports that when Trump chose to go with Brett Kavanaugh that time, the president indicated that he was “saving” Barrett for Ginsburg’s seat.

Barrett has repeatedly questioned the validity of the Supreme Court's ruling in Roe v. Wade, and President Trump has implied that the decision that legalized abortion throughout the U.S. might be overturned with Barrett on the Court. Based on her originalist philosophy, Barrett once published an article arguing that Brown v. Board of Education was improperly decided. However, she’s also referred to the landmark anti-segregation ruling as a “super precedent” — one of a handful of cases so important that the Supreme Court would never overturn it. Finally, Barrett could help Trump to finally undo President Obama’s signature legislation, the Affordable Care Act. The Supreme Court is set to hear a challenge to the law shortly after the election, and Barrett has publicly challenged past Supreme Court rulings that upheld the constitutionality of Obamacare.

Here's what you should know about the new nominee: