in nebraska, in particular we had strong views about the environmental issues, about the routing, et cetera, and it was on the basis of that we decided more work needed to be done. >>reporter: 16 months ago secretary of state hillary clinton told a san francisco audience she is inclined, slow was we coastlined to approve keystone xl, the second pipeline because we are going to be dependent on dirty oil from the persian gulf or dirty oil from canada. now a change of heart by the obama administration. >>shepard: and we are about to hear from republican leaders. what do republicans leaders then they can do to change this decision? >>reporter: we are hearing that republican lawmakers in the house of representatives and senate are plotting to revive this project through legislation, perhaps by attaching it to unrelated measure such as the payroll tax cut extension they believe president obama would be forced to sign. on the house floor today, one