WASHINGTON, Aug 7 (Reuters) - A $1 trillion infrastructure package that is a top priority for U.S. President Joe Biden overcame a key procedural hurdle in the Senate on Saturday, a victory for the White House and the bipartisan group of senators who spent months negotiating it. Voting continued in the 100-seat chamber, where the timing of a final vote on passage remained unclear. (Reporting by David Morgan and Makini Brice; Editing by Scott Malone and Sonya Hepinstall) Our Standards: The Thomson Reuters Trust Principles.