Negotiations on bipartisan legislation to punish Russia if it invades Ukraine is “on the 1-yard line,” U.S. Sen. Robert Menendez said Sunday. Menendez, chair of the Senate Foreign Relations Committee, said on CNN’s “State of the Union” senators were close to an agreement to impose “the mother of all sanctions” as they merged competing bills introduced by the New Jersey Democrat and the committee’s top Republican, U.S. Sen James Risch of Idaho. “What there is no doubt is that there is an incredible bipartisan resolve for support of Ukraine and an incredibly strong bipartisan resolve to have sev…