A tense standoff between Texas National Guard troops and the federal government escalated on Tuesday after the state’s military said it would “hold the line” in a battle for control of a stretch of the border with Mexico. The long-running power struggle between the once-independent state and the Biden administration was sparked by Texas authorities placing razor wire at a park on the banks of the Rio Grande that has seen high numbers of illegal crossings. Last week‚ the Texas National Guard...