Rep. Steve Cohen, Tennessee's only Democrat in Congress, announced he will not seek reelection and will retire from public life after the GOP-controlled state legislature redrew his Memphis-area ninth district last week, according to CBS News. Said Cohen: "This is by far the most difficult moment I've had as an elected official" — adding that he considered running in one of the redrawn districts but concluded they are "nothing like the ninth district that I've represented," a majority African-American district he has held since 2007.