Now it’s a fight between Sen. David Vitter and his Louisiana colleague Mary Landrieu.

At issue today is a letter Landrieu sent to a constituent who expressed concern over the fact that current regulations provide for a federal subsidy for health insurance premiums paid for Congress and its staffers. In Vitter’s opinion the letter is a bit lacking in veracity…

Vitter got a letter from the same constituent, and his response was a bit different than Landrieu’s…

Vitter’s release also contained a couple of other items of interest. First was an infographic showing the difference between Congress and everybody else where Obamacare is concerned…

…and then there was his red-hot quote which didn’t particularly name Landrieu but in the context of everything being said it wasn’t necessary to…

“Some are lying, trying to mislead the public about the Obamacare exemption for Congress. President Obama recently issued a special rule for Congress and congressional staff to get a special subsidy to purchase health insurance on the Obamacare Exchange unavailable to every other American at similar income levels. That’s an exemption, plain and simple.”

Yikes.

The Democrats already threatened to go after Vitter on his past dalliances with ladies of the evening over his making trouble about the exemption, but had to back down when the media got hold of their plans and the reaction was unfavorable.

How this thing ends up is an interesting question. Vitter isn’t going anywhere, but he doesn’t have the numbers in the Senate to get his amendment passed unless he can shame some Democrats into voting his way.