Congressional bills for defense spending and policy remain in play on Capitol Hill, but key differences over political and social issues, including the size of the Pentagon's budget, could mean Washington lawmaking will be stalled until after the outcome of the presidential election in November. Last year's Bipartisan Budget Act was passed to raise spending levels above the caps mandated by the 2011 Budget Control Act in the hopes of avoiding congressional quarrels that could derail the fiscal year 2017...