The Logan Act (18 U.S.C.A. § 953 [1948]) is a single federal statute making it a crime for a citizen to confer with foreign governments against the interests of the United States. Specifically, it prohibits citizens from negotiating with other nations on behalf of the United States without authorization.
Read more: http://law.jrank.org/pages/8357/Logan-Act.html#ixzz0NBI6hcA5
Obama is behind it and getting all reports of the kowtow apology/sellout mission, so probably clear on that front.