"A bipartisan bill introduced Thursday by Senator John Thune (R-S.D.) would require the TSA to use a risk-based security model for these transport modes and to budget money based on those risks. It would require a wider use of the agency’s terrorist watch list by train operators and more detailed passenger manifests along with tighter screening of marine employees. The legislation also would increase the TSA’s canine use by as many as 70 dog-handler teams for surface transportation."
"Lest you begin hyperventilating, it’s virtually impossible to envision airport-style screening detectors or security queues snaked around America’s train and bus passenger depots. “This is very much not creating for bus or rail transportation the [security] model that exists for aviation,” said Frederick Hill, a spokesman for the Senate Committee on Commerce, Science, and Transportation, which Thune chairs."