trump's lawyer rudy giuliani. he's undeniably a central figure in a lot of these efforts following the 2020 election. he's currently not a subpoena target for the committee. why is that? and do you expect that will change? >> the committee has said over and over that pretty much anyone is on the table as far as who they want to talk to. and just because they haven't subpoenaed guiliani yet doesn't mean they won't in the future. we've seen other folks that were in these willard hotel war room situations subpoenaed by the committee. we've seen them go after other people in the former president's orbit that were involved in these efforts to overturn the election. it's very likely that at some point the spotlight will turn to giuliani himself if he hasn't already come forward to talk with them voluntary. >> nicholas wu, ali vitali, thank you both. still to come, more than 6 million americans live with alzheimer's. and msnbc's richard lui spoke