North Carolina Republican U.S. Sen. Thom Tillis made an unexpected decision not to seek a third term. Here’s what the reaction has been.

North Carolina Sen. Thom Tillis' announcement over the weekend that he won't seek reelection is heating up the campaign on both sides of the aisle.

GOP Sen. Thom Tillis was back on Capitol Hill on Monday as Senate Republicans struggled to pass their "One Big Beautiful Bill Act" he opposes -- before President Donald Trump's July Fourth deadline. "I may look for an opportunity to speak again,