Republicans will work on unraveling and replacing the health care law at the same time, House Speaker Paul Ryan said Tuesday as GOP leaders struggled to align their zeal to rapidly erase one of President Barack Obama’s proudest achievements with Congress’ legislative and political pitfalls. Ryan, R-Wis., spoke to reporters amid growing concern among Republican lawmakers about erasing Obama’s overhaul -which expanded coverage to 20 million people – without having an alternative to show voters.