Port Authority Chairman David Samson discusses future of the agency: "Just a few weeks into his chairmanship of the powerful, bi-state agency, he outlined his priorities and addressed the possibility of toll increases at river crossings, World Trade Center construction costs and the relationship between Christie and his cross-Hudson counterpart, New York Gov. Andrew Cuomo. Samson was elected chairman Feb. 3. Here are excerpts from the interview, which was edited for space and clarity:"