Coverage Marking News Today

we begin with breaking news from the white house. president biden has tested positive for covid-19, again. after about the position to the president says were four consecutive days of negative tests. president biden tweeted, quote, i have got no symptoms but i am going to isolate for the safety of everyone around me. and the physicians update said, this development represents what he is calling rebound positivity. but for now, there is no reason to bring in a sheet treatment. we are go...

>> david, thank you. this was an incredible documentary. it is an important part of our collective narrative. you can catch the encore presentations of "the memory box" saturday and sunday at 10:00 p.m. eastern on msnbc and stream it on peacock. make sure you stay with msnbc for special coverage marking 20 years since the 9/11 attacks. coverage starts tomorrow at 6:00 a.m. eastern with a special edition of "morning joe." then watch shows anchored from ground zero, the pentagon and shanksville, p...