Republicans have never held a midterm convention before. But there's also never been a president like Donald Trump. Billed as a "Trumpapalooza," the unprecedented event kicks of in Dallas Wednesday.

Voters and election officials are navigating uncertainty about mail-in voting for the midterms as the legal fight drags on over the U.S. Postal Service plan for President Trump's bid for restrictions.

The idea of law enforcement taking possession of ballots in the middle of an active election used to be considered impossible. Now, it's a scenario voting officials — and judges — are training for.

The catastrophic 9/11 attacks forced the intelligence community to radically revamp its ways of doing business. Now, critics say, President Trump is dismantling much of what was built since then.

The move is a start toward reviving a tradition that largely disappeared after the Sept. 11, 2001, attacks 25 years ago this week.