Via Observer.com:

A Politicker examination of federal campaign finance disclosure reports submitted by Paul Ryan’s congressional campaign has uncovered indications Mr. Ryan may have improperly used funds raised for his re-election effort in Wisconsin for presidential campaign activities at the Republican National Convention in August. Mr. Ryan is simultaneously running for re-election in Wisconsin’s First Congressional District and on the GOP presidential ticker with Mitt Romney. At the RNC in Tampa, Mr. Ryan’s House campaign spent over $75,000. However, these convention expenses seem to go far beyond the scope of the activities and staff he had at the RNC for his bid to reclaim his House seat.

One prominent election law expert told us this is a “highly problematic” potential violation of Federal Election Commission regulations regarding candidates running for multiple federal offices.

What? Paul Ryan, part of the upfront, honest, frank, transparent team of Romney-Ryan, did something dishonest? Go on!

Team Ryan gave “a shifting series of explanations including at least one statement that was clearly untrue” to the Observer.

Jerry Goldfeder is an attorney with the law firm of Stroock & Stroock & Lavan LLP who specializes in election and campaign finance law:

“It sounds as if he used congressional campaign funds for national campaign purposes and that’s highly problematic.” [...]

[T.J. Helmstetter, a spokesman for the Zerban campaign] also pointed out that Mr. Ryan has faced allegations that his television ads in the race, which do not all specifically mention his congressional campaign, constitute improper use of campaign funds. He said both the issue of the commercials and the RNC spending raise “very important” questions.

Stay tuned.

All the details are here.