Even in Texas, where Sen. John Cornyn looks to be in solid shape, the senator isn’t taking any political chances. Mexico is Texas’s top foreign trading partner, and the state would face the equivalent of $27 billion in taxes if all the threatened tariffs were implemented. “Senator Cornyn supports the president’s commitment to securing our border, but he opposes this across-the-board tariff which will disproportionately hurt Texas,” a spokesman for the senator told The Dallas Morning News.

What’s notable about these defections is that two of the senators hail from border states, where fighting illegal immigration is a top priority. When a bipartisan majority of senators rebuked Trump for overreaching his authority to declare an emergency at the border, McSally and Cornyn both stuck with the president.

This time, however, the economic pain threatens to be so significant that they’re no longer willing to stand pat. With their political careers at stake, there wasn’t enough benefit to blindly stick with the president.