In Texas, the nation’s biggest, most important red state, Trump’s disapproval rating has consistently lagged behind many of the 30 states he carried in 2016. This potentially puts the state — a must-win for the president if there ever was one — in play for 2020.

To think Trump’s unpopularity in Texas is because of Twitter, or Ukraine, or the media, or a smear job by the left is to underestimate the problem. The reality is that Trump’s signature policies are out of step with what most Texans want....

While the United States struggles to adjust to a changing demographic makeup, Texas has been “majority minority” for more than a decade, with Hispanics expected to outnumber non-Hispanic whites in the next few years. Hispanics and non-Hispanics live by, work with, are friends with and go to school with each other, and this familiarity increases fondness. Which is why Trump’s fear and disparagement of immigrants — and Mexicans, in particular — falls flat here.

According to a Texas Politics Project poll, more Texans strongly disapprove of Trump’s immigration approach than strongly approve. Only 39 percent of Texans support additional federal spending on border barriers along the Mexican border, according to a November 2019 report by the U.S. Immigration Policy Center....

Nonetheless, a state that should be a Republican shoo-in increasingly appears weary of the party’s standard-bearer. And if there’s anything I’ve learned living in Texas, it’s that Texans will not sit quietly and be taken for granted.