The dollar and U.S. Treasuries are both likely to slide as soaring government debt in the world’s biggest economy undermines confidence in its assets, according to Jim Rogers, chairman of Rogers Holdings.

“The government is printing lots of money and borrowing even more; that’s not the basis for a sound currency,” he said in a telephone interview today from Singapore. “The idea that anybody would lend money to the U.S. government for 30 years at 3 or 4 or 5 or 6 percent interest is mind-boggling to me.”