HOUSE OVERSIGHT 019427 rely on the federally facilitated marketplace. State Medicaid programs, which typically serve low-income individuals, are also undergoing testing with the federal data hub. At least one state, Arizona, has not begun that work. It will start testing in September, a late start that worries the executive director of the state's marketplace. "It's a concern that we're testing this late," said Tom Betlach, who runs the Arizona Health Care Cost Containment System. "Usually when you do testing, you have to go ahead and address any changes. Given the October 1st start date, I don't know much of it will be an iterative process." Back to top 80 House members: Shutdown better than Obamacare Charles Babington —Associated Press More than one-third of House Republicans urged their leader Thursday to trigger a government shutdown rather than pay for the implementation of the health-care law they call Obamacare. A letter from 80 Republicans asked Speaker John Boehner, R-Ohio, to resist any spending bills that would accommodate the new health-care law, which is nearing a critical stage of signing up millions of Americans for health coverage. Because it's virtually certain that President Obama and the Democrat-controlled Senate would reject such demands, leaders of both parties say the standoff likely would result in a partial shutdown of the federal government, similar to those that occurred in 1995 and 1996. The letter is mixed news for Boehner and other GOP leaders who view a government shutdown as politically unwise. The federal 2013 fiscal year ends Sept. 30. New money must be appropriated by then to avoid a shutdown of countless government offices and agencies. Voters chiefly blamed congressional Republicans for the mid-1990s shutdowns, and the fallout boosted Democratic President Clinton. Ever since, many establishment Republicans have urged the party to avoid using shutdown threats as a bargaining tool. But a new generation of te