Just below, Mark argues that the characters who may have a real problem from Santorum’s continued meetings with lobbyists are the leaders of the Heritage Foundation, who hosted the meetings. Maybe, maybe not. It is my understanding that it isn’t uncommon for think tanks to rent out some of their meeting space when it is vacant. I may or may not be right about this, but if it’s true, the only issue from Heritage’s point of view is whether they charged Santorum like they would anyone else. Heritage is very convenient to the Senate office buildings–it’s about a block or so away. So if all that happened was that these guys wanted to meet, they rented a room at Heritage, and that was it, then it’s no harm, no foul as far as Heritage is concerned. If, on the other hand, they provided it for free–and if this was in fact a common practice–then there are major tax code violation issues here. Does anyone know what the facts are on these questions?