I cannot imagine that having drones guided by US intelligence blowing up all your refineries and oil depots is good for business.
Most people don't run a prospering cafe if someone throws an incendiary device into the walk-in freezer once or twice a week.
Constables are not cops, in general. IDK how exactly it works in Texas and it looks like it's actually more similar than it usually is, but as a general rule in practice, constables are sort of the "civil matter" version of police (who are chiefly for criminal matters) -- they serve evictions and summonses, child support warrants, traffic detail like in this case, that kind of thing.