Lone Star (1996)

Factual error: We learn that the previous sheriff, Charlie Wade, took revenge on anyone who smuggled illegal immigrants across the border in the late 1950s - we are shown the smuggling, as Eladio Cruz hides a group of Mexican men in a watermelon truck to take them across the border. However, in the 1950s, the border was not fortified the way it is now - the smuggling shown would simply not have been necessary.

Continuity mistake: When the Colonel appears in full dress green uniform in his estranged father's bar, the colonel's shoulder insignia (eagles) are on upside down.

Continuity mistake: In the scene where Sam and Pilar start their walk to the river (after the ceremony at the courthouse), she states that she is on her lunch hour, but the sun and shadows show it is late in the day.

Sheriff Sam Deeds: Well, I'm working on a few things. I'm going over to the other side.
Ray: Republicans?
Sheriff Sam Deeds: No, Mexico.

Sheriff Sam Deeds: You oughta put up a banner: "Frontera, Texas: gateway to inexpensive pussy."

Pricilla Worth: Damn, they're closing down military left and right and putting up jails like 7-Eleven stores.