MIAMI (AP) — The ad sounds like something out of the GOP 2024 playbook, trumpeting a senator’s work with Republicans to crack down on the flow of fentanyl and other illegal drugs into the U.S., getting tough on Chinese interests helping smugglers, and noting how he “wrote a bill signed by Donald Trump to increase funding for Border Patrol.” It’s actually a commercial for Sen. Sherrod Brown, an Ohio Democrat facing a tough reelection fight that will help decide control of the Senate. “Ohioans trust Sherrod Brown to keep us safe,” says the narrator of the ad, sponsored by the...