China warns U.S. debt-default idea is "playing with fire"

The idea of a technical default -- essentially delaying interest payments for a few days -- has gained backing from a growing number of mainstream Republicans who see it as a price worth paying if it forces the White House to slash spending, Reuters reported on Tuesday.

But any form of default could destabilize the global economy and sour already tense relations with big U.S. creditors such as China, government officials and investors warn.