Congress is scrambling to complete work this week on the Federal Aviation Administration bill before key authorities expire on May 10. But a push for amendments, including some with hefty price tags, is threatening to gum up the works. CQ Roll Call's David Lerman and Valerie Yurk outline the major obstacles to the five-year FAA bill and assess its prospects for passage.Learn more about your ad choices. Visit megaphone.fm/adchoices