impeachable activities. there are some activities the president's engaged in that are also possibly criminal conduct. for example, the violations of the tax laws that seem to have been at the heart of some of mr. cohen's testimony. but i think far more important for congress to look at are those activities that aren't crimes but that are abuses of presidential authority. for example, trying to direct the acting attorney general to shut down an investigation of his own conduct. potentially the story that we've just heard in the last couple of days about ordering the government to give a security clearance to someone who the government believed was a security risk, ie, his son-in-law. there are a host of issues like that that involve president trump's use of presidential authority in a way thai buct as the trust of office that are far greater than the investigation.