WASHINGTON (AP) — When Bill Pulte was nominated as the country's top housing regulator, he told senators that his “number one mission will be to strengthen and safeguard the housing finance system.” But since he started the job, he's distinguished himself by targeting President Donald Trump 's political enemies. He's using property records to make accusations of mortgage fraud and encourage criminal investigations, wielding an obscure position to serve as a presidential enforcer. This week, Trump used allegations publicized by Pulte in an attempt to fire Lisa Cook, a member of the Federal Reserve board, as he tries to exert more control over the traditionally independent central bank.