By Patricia Zengerle WASHINGTON (Reuters) -The U.S. Congress edged closer on Wednesday toward completing a long-stalled bill authorizing hundreds of billions of dollars to boost the country’s ability to compete with Chinese technology, with Senate votes on motions addressing a range of issues, including Iran policy. Although the motions are not binding, they convey a sense of what senators would like to see in the final bill and what could keep it from getting enough votes to become law. With Democrats narrowly controlling the House of Representatives and Senate, Republicans used debate on the…