In its quest to receive an exemption from the airport slot requirement at Ronald Reagan Washington National Airport in Washington, D.C., Southwest Airlines recently unveiled a petition to gauge support for nonstop service from William P. Hobby Airport in Houston and now has more than 10,000 signatures. Thirty members of Congress, four U.S. Senators and a number of local officials have signed the petition lobbying for service from Houston to D.C. Southwest has already geared up to ...