President Barack Obama on Monday said his aides are working on ideas to “jump-start— hiring, but he offered few details on what is being considered or whether the White House would back a “second stimulus— being considered on Capitol Hill.Obama spoke at the end of a meeting with his Cabinet, where jobs and the economy were the primary topics of discussion. The president said some of the ideas involved “infrastructure— projects, adding that officials are “revamping some terrific ideas that could immediately put people back to work.—White House officials want to have a few concrete ideas in the can by the time Obama convenes an economic summit at the White House on Dec. 3.The forum will bring “people together from all parts of the country to explore how we can jump-start the hiring that typically lags behind economic growth,— Obama said.The president acknowledged that improving the jobs picture “is going to be a challenging task,— but he argued that “there are core strengths to the American economy that will put us in good stead over the long term.—Obama said that during the Cabinet meeting, he presented an update on health care reform, describing the “urgent need to get to the finish line.— The Cabinet also heard from Secretary of State Hillary Rodham Clinton and Secretary of Defense Robert Gates on national security issues and got a briefing from Office of Management and Budget Director Peter Orszag on the fiscal 2011 budget blueprint, which is now being crafted.