[dnautics]

While I have faith that the US government has a legal system that does a reasonably good job adhering to the principles of logic, precedence, rule of law, reasonableness - and probably a relatively excellent job (comparing to other legal systems), it is neither perfect nor immune from political pressure. Time and time again we see broad classes of situations (drug war, guantanamo) where the US sees fit to throw out what I would consider to be intelligent, rational, reasonable decisions where the matters are not really in shades of grey... It is entirely reasonable to be worried about a very unpleasant reaction by the authorities.

EDIT: I think the likelihood of severe negative consequences is low, but there is a nonzero likelihood of being targeted for a bad experience, for varying values of "bad experiences".

[reeses]

If the US government were to take action on this, the mostly likely consequence is seizure of the funds. They'd target the site itself, which might give them a list of names (which, at the most, they'd lateral to the IRS for fun).

Otherwise, the site would disqualify the campaign and return any funds.

[dnautics]

(edit to above): I think the likelihood of severe negative consequences is low, but there is a nonzero likelihood of being targeted for a bad experience, for varying values of "bad experiences".