In the past, when individual Congressman have tried to sue the President, the courts have ruled that they do not have standing to sue. The S.T.O.P. resolution is an attempt to remedy that problem and sue the president for usurping the powers reserved in the Constitution for Congress. It is thought that the courts could accept the entire House as having standing to sue the president and declare some of his actions illegal. S.T.O.P is not an impeachment resolution, though it could be preliminary to impeachment.