Gaetz associate signals he will plead guilty in federal case, a worrisome development for the congressman

A Florida politician who is central to the investigation into Rep. Matt Gaetz for possible sex trafficking of a minor signaled Thursday that he will plead guilty in his own federal case, a court entry shows, a troubling development for the congressman as it suggests prosecutors have secured a potentially important witness against him.

Joel Greenberg, a former tax collector for Seminole County, Fla., had since last year been outlining to prosecutors how he and Gaetz (R-Fla.) would pay women for sex using cash or gifts as he tried to...