DETROIT — President Donald Trump unleashed a string of scathing and at times inaccurate tweets late Thursday, attacking Michigan Gov. Gretchen Whitmer.The president took aim at the Democratic governor on the same day state and federal authorities revealed they had foiled a plot to kidnap and possibly kill Whitmer. Whitmer responded late Thursday, poking fun at the president’s decision not to participate in an upcoming debate against Democratic nominee Joe Biden.During a speech Thursday afternoon, the governor thanked law enforcement for their efforts. But then she took aim at the president, no…