The race in Maine, which could decide Senate control, is testing whether there is still room for Ms. Collins’s brand of moderation during a sharply polarizing presidency.

Good morning,

The Trump administration's attempt to quietly—but massively—expand who can be detained pending their removal has been met with overwhelming pushback from a remarkably large number of district courts.

Many of them held legal status but were unable to immediately produce their documentation to the agents, according to their manager.