As expected, Fannie Mae, in consultation with the Federal Housing Finance Agency, announced last week it appointed Timothy Mayopoulos as president and CEO and a member of the board amid concern expressed by lawmakers of “excessive compensation” at both GSEs. Mayopoulos, 53, currently serves as executive vice president, chief administrative officer and general counsel, but has served in a number of other critical capacities since joining Fannie in April 2009.When he assumes the corner office on June 18, Mayopoulos will become the company’s third CEO in four years, succeeding Michael Williams, who announced he would step down in January.