President Vladimir Putin’s decision to allow Edward Snowden to land in Russia will have “serious consequences” for U.S.-Russian relations, Sen. Charles E. Schumer said Sunday. Mr. Schumer, New York Democrat, said on CNN that the Russian involvement in the Snowden case, coming as the former national security worker arrived in Moscow on Sunday from Hong Kong, was not the action of an ally. “The bottom line is very simple: Allies are supposed to treat each other in decent ways, and Putin always seems almost eager to put a finger in the eye of the United States, whether it is Syria,...