Interviews with more than four dozen people in this swing region north of Los Angeles show that tactics matter quite a bit in the immigration debate.

In a Sunday tirade zeroing in on Democratic leaders, President Donald Trump said he wants to "expand efforts to detain and deport illegal Aliens in America's largest cities." His Truth Social post attempted to distinguish between those he called "REAL Americans" and those "Radical Left Democrats" to whom he attributed a long list of sins,