Obama denounces 'irresponsible' healthcare critics

President Obama denounced "irresponsible" Republican critics of his health care law Thursday, saying efforts to "blackmail" him into changing the plan could trigger a government shutdown and a U.S. credit default. "Now they're threatening steps that actually would badly hurt our entire economy," Obama said during a health care speech in Largo, Md. The speech came on the same day the administration announced a change in the online rules for small businesses: Some small-business owners wishing to enroll in new health care exchanges opening Oct. 1 will not be able to do so online at first.