President Trump’s effort to stop key states from certifying Democrat Joe Biden’s election victory hit another hurdle Friday after two Michigan lawmakers he had summoned to the White House said they saw no reason why the state’s results would change.

The long shot bid to swing the Electoral College in the president’s favor—an unprecedented effort to bypass election tallies—drew fresh criticism from some prominent Republicans, with some labeling his approach reckless and others calling for him to immediately back up his fraud…