By Patricia Zengerle WASHINGTON (Reuters) - A group of senior Republicans in the U.S. Congress urged President Joe Biden to send longer-range missiles to Ukraine, in a show of continued support for Kyiv among U.S. lawmakers despite pushback from some conservatives against more aid. In a letter to Biden dated Nov. 1 and seen by Reuters, the top Republicans on congressional foreign relations and armed services committees said they welcomed reports that the administration has provided some limited-range Army Tactical Missile Systems (ATACMS) to Ukraine, but asked that he also send more longer-ran...