President Donald Trump's ex-attorney will return to Congress next week for more testimony, US lawmakers said Thursday, after three days of marathon appearances during which Michael Cohen accused his longtime boss of being a conman engaged in illegal activity. House Intelligence Committee chairman Adam Schiff also revealed that Felix Sater, a Russian-born real estate developer who claims strong connections to the Kremlin, and who reportedly pitched the Moscow Trump Tower project to Trump's team, will testify before the committee on March 14.