The back-and-forth over Texas Senate Bill 4 is just the latest in a series of border security disputes between the state and the federal government. This week's episode of Texas Wants to Know digs into who's responsible for what when it comes to the border.

UNT Dallas College of Law professor and former U.S. Magistrate Judge for the Southern District of Texas Brian Owsley says control of the border is ultimately a federal responsibility. Jeremy Wallace, a political reporter for the Houston Chronicle and San Antonio Express-News, adds that covering the border requires more nuance than we often give it.