LA-6 should be a comfortable win for the GOP. Bush won there by 19 points in 2004 and the district hasn't sent a Democrat to Congress in 32 years. But the Democrat in the race, Don Cazayoux, is up in the polls and nonpartisan election watcher Charlie Cook has rated the race as "lean Democratic."
So Republican-leaning outside groups are throwing tons of cash at the race. If they coordinated with the Republican Party in order to plan how that cash is spent, they broke the law. The regulatory body in charge of investigating such cases? The FEC, currently out of commission.