WASHINGTON -- A special inspector general overseeing government efforts to bail out portions of the private sector said Tuesday the U.S. so far has committed nearly $2.98 trillion toward stabilizing financial companies and rescuing domestic auto makers.

Meanwhile, only $109.5 billion remains in a $700 billion program that was launched as a way to remove toxic assets from bank balance sheets, Neil Barofsky told lawmakers. Mr. Barofsky has come to be known as the "TARP cop" because his office is responsible for policing the...