They’ve had plenty of tangles over the years. Now, the two Republicans are rivals in the quest for GOP megabucks. Jeb Bush was running for reelection as Florida’s governor in 2002 and needed the help of his brother, the president. But there was one person standing in his way: Karl Rove. Rove, the storied strategist who helped steer George W. Bush into the White House two years earlier, had laid down a strict rule for candidates seeking presidential assistance: No one — not even Jeb — would have unfettered access to the commander in chief. -snip- Now, at the onset...