Narrow passage of a sweeping health care bill by the House of Representatives portends a continuing difficult fight for President Obama and fellow Democrats to get a bill through the Senate and into law. The House voted 220-215 late Saturday, with 39 Democrats opposed and one Republican in favor, to approve what would be the biggest expansion of health care coverage since Medicare was created more than 40 years ago. The Affordable Health Care for America Act, or H.R. 3962, restricts insurance companies from denying coverage to anyone with a pre-existing condition or charging higher premiums based on gender or medical history. It also provides federal subsidies to those who can not afford it. And it guarantees coverage for 96 percent of Americans, according to the nonpartisan Congressional Budget Office. But turning the bill into law remains uncertain. The Senate must now pass its own version of a health care bill, and Senate Majority Leader Harry Reid of Nevada last week signaled uncertainty over whether that will happen this year. Once both chambers have passed a bill, a congressional conference committee will merge the two proposals into a consensus version that would require final approval from each chamber and Obama's signature. On Sunday, Obama praised the historic House vote to pass the bill and called on the Senate to take the baton and complete its work. For years, we