A Maine public relations firm has been tapped to assist a grassroots effort aimed at stopping George W. Bush’s presidential library, museum and think tank from being built at Southern Methodist University in Dallas. The Rev. Andrew Weaver, an SMU graduate from New York, says P&S Associates of Maine, led by Stephen Swecker, has been hired to design ads and to coordinate the effort. Swecker is also editor and publisher of The Progressive Christian. Weaver says opponents of the location argue that the library will be a partisan think tank not under SMU’s control and will promote the Bush administration.