Billionaire investor Carl Icahn made a cryptic reference suggesting he has an interest in embattled drug maker Valeant on Tuesday, and said he was speaking to U.S. politicians about a corporate cash repatriation law that would deter so-called tax inversion deals. “I’m not in Valeant, well, I don’t want to say I’m not completely in it but I’m not going to tell you where I am with it,” Icahn said, when asked about the company at the New York Times DealBook conference.