the scandal derailed mr christie's presidential ambitions. in washington, the politicalfocus remains on the investigations into russian involvement in the us election, and whether the trump campaign was involved. the chairman of a senate intelligence committee looking into the matter says they have asked 20 people to be questioned. among them, the president's son—in—law, jared kushner, who has acknowledged meetings with russian officials during the transition. the top democrat on that same committee says there is no question about russia's motives. russia's goal, vladimir putin's goal, is a weaker united states, wea ker goal, is a weaker united states, weaker economically, weaker globally, and that should be a concern of all americans regardless of party affiliation. science and the environment has had a tough week, with the news on tuesday that president trump signed an order rolling back some of his predecessor's environmental policies. experts say that will take the us back a step in meeting global targets. so, what is the scientific c