The twin failures highlighted the one step forward, two steps back nature of the bitterly-divided Congress, even as Senate Majority Mitch McConnell and House Speaker Paul Ryan trumpeted victories on drug abuse legislation and other, more modest bills. Earlier, McConnell, R-Ky., again tried to call up a $575 billion Pentagon funding bill but was blocked by Democrats who fear that Republicans will use the measure to boost the defense budget while keeping domestic programs frozen — and in the process unravel last year's hard-fought budget deal, which reversed curbs on both Pentagon and domestic accounts. Democrats fired back at a news conference in which they blasted Republicans for failures on gun safety legislation, Zika, reform of the justice system, and emergency funding to confront the nation's opioid epidemic. In response, Republicans cited recently-enacted legislation to help Puerto Rico through its fiscal crisis, a bipartisan measure to combat opioids, aviation safety legislation and legislation requiring labels on foods containing genetically modified ingredients. In the House, Republicans rammed through a $32 billion spending bill for the Interior Department and the Environmental Protection Agency — laced with provisions to roll back Obama administration regulations on matters like coal-fired power plants — on a partisan 231-196 vote.