By Luca Di Leo

Former Federal Reserve Chairman Alan Greenspan appears on “Meet the Press,” Sunday. (AP Photo/NBC, William B. Plowman)

Former Fed Chairman Alan Greenspan is stepping up his call for Congress to let the Bush-era tax cuts lapse.

In an appearance Sunday on NBC’s “Meet the Press,” Mr. Greenspan used his strongest words yet to urge lawmakers to let them expire. The risk of a U.S. debt crisis, he said, is just too big. Mr. Greenspan, who retired from the Federal Reserve in 2006, had endorsed the cuts back in 2001 championed by then-President George W. Bush.

“This crisis is so imminent and so difficult that I think we have to allow the so-called Bush tax cuts all to expire. That is a very big number,” he said, referring to how much the U.S. government could save from letting income taxes go back up to levels last seen under former President Bill Clinton…