Axios

The Senate voted 54-37 on Sunday to advance Markwayne Mullin's nomination to lead the Department of Homeland Security.

Why it matters: Mullin is on track to be confirmed this week to succeed Kristi Noem as Homeland Security secretary when Noem steps down at the end of the month.

The United States faces a dire and unsustainable fiscal outlook. You'd never know it from the action in Washington.

• Across parties and policy areas, you'd never guess that the U.S. faces fiscal constraints created by its high-and-rising public debt, ballooning deficits without precedent in times of prosperity, and a looming entitlement spending crisis when the Social Security trust fund runs out.

President Trump on Saturday night gave Iran a 48-hour deadline to reopen the Strait of Hormuz or else the U.S. will start destroying Iranian power plants.

Why it matters: The threat marks a dramatic reversal from just a day earlier when Trump floated ending the war without reopening the strait, signaling the Hormuz crisis has become the issue he can't walk away from, even as he looks for an exit.