Aaron P. Bernstein/ReutersA new complaint filed by investor Bill Browder with the Treasury's Office of Foreign Asset Control alleges that California Rep. Dana Rohrabacher and his staff director, Paul Behrends, violated the Magnitsky Act when they tried to get Russia's deputy general prosecutor removed from a US sanctions list last year. Rohrabacher's spokesman, Ken Grubbs, responded to the complaint Tuesday morning, characterizing Browder's OFAC filing as an attempt to obfuscate Russia's side of the story and slamming the wealthy investor as "a billionaire tax exile." "Why would a billionaire tax exile want to prevent a US congressman from receiving both sides of an issue currently before Congress?" Grubbs said.