jonathan adler teaches law at case western reserve university school of law. catherine kobayashi spoke with him earlier. >> professor adler, the democrats were intent on impeaching the president again. but this time ten republicans joined him. what do you make of that? >> i think it shows an increasing number of rublicans have concluded that the president has engaged in the sort of conduct that warrants impeachment, which includes things like abuse of officend betrayal of the oath that a president takes to uphold the constitution. >> and the president has less than a week left in office. what was wisdom in impeaching him? >> well, i think it serves two purposes. one purpose is to make clear that this sort of conduct is not acceptable so that future presidents know that they should not engage in this sort of conduct. also one possible consequence of impeachment if the president is convicted in the senate is disqualification from holding future office. and so that's certainly something that would matter even if the president is out of office. >> and what can we