WASHINGTON — A 37-count federal indictment, unsealed Friday, accused former President Donald Trump of lying to federal investigators as part of a scheme to keep classified documents in his possession, but numerous Texas Republicans continue to stand by him, dismissing the charges as a partisan ploy. “Today is a very sad day in American history,” Sen. Ted Cruz, R-Texas, said on his podcast Friday. “We have never in over two centuries of our nation’s history had a new president who launched the entire Department of Justice, the entire machinery of justice on a vendetta to persecute, to attack, to investigate, to indict, to try to throw in jail the former president who, it should be noted, is also currently the leading contender on the Republican side to run against the current president.”