The low-drama South Dakotan has arrived at the apex of power in the Senate just as Donald Trump is exerting his own executive authority. Will Thune draw a line?

For weeks, Senate Democrats have tried to have it both ways as they’ve faced a tricky choice: cast a vote that allows for a government shutdown in hopes of saving some federal jobs or give into ...

Mass deportations and a debt-limit increase are being stalled by House-Senate differences and the massive size of the budget ...