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Plus, three more things to know today.

Trump became the third president in U.S. history to get impeached.

House lawmakers voted almost entirely along party lines to impeach the president for obstruction and abuse of power. But Speaker Pelosi has signaled she may withhold the articles of impeachment. Some progressives have urged withholding in order to force GOP leaders to agree on parameters for the Senate trial that they deem more fair, including calling as witnesses Trump officials who refused to testify in the House investigation.

Obamacare’s individual coverage mandate was struck down.

A federal appeals court found the Affordable Care Act’s individual mandate unconstitutional but stopped short of voiding the entire law. Instead, the panel of judges punted back to a lower court to decide if the rest of the act remained valid after removing the penalty for not having health insurance. While the ruling does not interrupt coverage for anyone covered through Obamacare’s insurance marketplaces or Medicaid expansion, the future of the ACA remains uncertain.

McConnell tees up 13 judge nominations through Senate.

Senate majority leader Mitch McConnell forced through a deal to expedite 11 federal district judge nominations on Wednesday. McConnell also repeated his vow to push through a new Supreme Court nominee, should a vacancy open in 2020. As CNN reports: “Trump’s work transforming the courts has been the key to his legacy—and potentially keeping his electoral coalition together in 2020.”

How to watch tonight’s Democratic debate

Because of high qualification requirements, only former Vice President Joe Biden; South Bend, Indiana, Mayor Pete Buttigieg; Sen. Amy Klobuchar; Sen. Bernie Sanders; billionaire activist Tom Steyer; Sen. Elizabeth Warren and entrepreneur Andrew Yang will be participating in tonight’s debate. Climate change and financial transparency are expected to be hot topics. Check out the start time, lineup, and stances on key issues of the top remaining presidential candidates here.