"The total potential federal government support could reach up to $23.7 trillion," says Neil Barofsky, the special inspector general for the Troubled Asset Relief Program, in a new report obtained Monday by ABC News on the government's efforts to fix the financial system. ... "The potential financial commitment the American taxpayers could be responsible for is of a size and scope that isn't even imaginable," said Rep. Darrell Issa, R-Calif., ranking member on the House Oversight and Government Reform Committee. "If you spent a million dollars a day going back to the birth of Christ, that wouldn't even come close to just $1 trillion -- $23.7 trillion is a staggering figure." ... Barofsky's estimate means that if each federal agency spends the maximum potential amount involved in these 50 different initiatives -- if the Federal Reserve ends up spending $6.8 trillion on its programs. If the Treasury Department spends $4.4 trillion, if the Federal Deposit Insurance Corporation spends $2.3 trillion, and so on -- then the numbers add up to a total of $23.7 trillion.