Timothy L. O'Brien, Columnist

Felix Sater Is a Lean, Mean Trump-Russia Machine

A career criminal keeps popping up to reveal Trump ties to Russia.

Trump, Arif and Sater at the Trump Soho launch party in 2007.

Mark Von Holden/WireImage

Felix Sater is back, and making it even more difficult for President Donald Trump to write off questions about his ties to Russia.

Among the many characters who have populated Trump's checkered history in real estate, Sater is the guy with one of the diciest resumes. A career criminal with ties to both organized crime and federal law enforcement, he partnered with Trump for years on a series of high-profile and unsuccessful real estate deals, including the Trump Soho hotel and condominium in Manhattan.