questions so to be answered on that front. a lot of questions still to be answered. and in a new column for the washington post, ruth marcus writes, quote, a select committee has performed a vital public service by amassing the record it has, amidst the place to continue. especially for those who doubted that this enterprise was worth the effort is the critical role of congressional oversight, for posterity as well as the president. but another lesson, one manifested during watergate, is that oversight has its limits. federal prosecutors possess unrivaled power to assemble evidence, and about testimony overcoming bogus assertions of privilege, and granting immunity when warranted. our justice department officials preparing to deploy that authority, when it comes to the events surrounding january 6th? joining me now to discuss, msnbc contributor and former u.s. attorney, joyce alene joyce vance. she is now a law professor at university of alabama. also with us, national co