- On Thursday, House Republicans narrowly passed a bill to repeal Obamacare
- Julian Zelizer: This victory shows the damage Trump and Republicans can do to Obama's legacy when they work together
Julian Zelizer, a history and public affairs professor at Princeton University and a New America fellow, is the author of "The Fierce Urgency of Now: Lyndon Johnson, Congress, and the Battle for the Great Society." He's co-host of the "Politics & Polls" podcast. The opinions expressed in this commentary are his own.
(CNN)Today's vote in the House of Representatives should be a loud wake-up call for anyone who has been dismissing President Trump. The vote to repeal and replace the Affordable Care Act demonstrates the serious threat that the President, when he is able to work in tandem with the Republican Congress, poses to President Obama's legacy.