If this president, after all he’s done in just two years, including everything proved and everything illuminated in the Mueller Report, doesn’t deserve to have the House consider impeachment, why bother having impeachment in the Constitution? What offense against the Constitution, and the law, and preserving good international relations, and political ethics and societal norms and common sense and plain old good manners, will it take for the men and women we elected to look out for our nation to get off their asses and do their jobs? There is too much smoke there now for it not to be prudent for them to make sure that nothing’s on fire.
By the way, threatening not to work with Congress on anything—not even infrastructure!—until it stops investigating allegations of wrongdoing against him should make it clear to all that he doesn’t understand how the system works. He wasn’t elected king.
And people who are subpoenaed by Congress don’t get to choose whether to comply or not. Not how it works. They can refuse to testify once they get there, and be held in contempt and go to jail as a result (and be proud that they stood up for what they say they believe in), but if they claim to believe in the rule of law they can’t ignore a subpoena. Keep your eyes open for the proliferation of Trumpeters arguing that for some dumb reason or another the law doesn’t apply to them. Then imagine making that argument in your own defense.