President Biden on Thursday sharpened his warnings to voters: If Republicans are in charge in Congress, GOP “trickle-down” economic policies will raise costs for American families and “make inflation worse.” “When I took office, the economy was in ruins,” he said during a speech in Syracuse, N.Y., before touting major legislative changes enacted under Democrats and aimed at fortifying America’s economic competitiveness and its middle class. House Republicans, who sense that election results after Nov. 8 may deliver divided government, promised this week that a GOP majority would end “reckless spending” backed by the president’s party, “unleash” domestic petroleum and…