NYC Mayor Bill de Blasio joins Morning Joe to discuss the latest involving Saturday's NYC explosion and the search for Ahmad Khan Rahami and if Rahami acted alone or is part of a bigger cell.Sept. 19, 2016
UP NEXT
Kennedy family members endorse President Biden
03:37
Stepson of former ‘Real Housewives’ star arrested on Jan. 6 charges
00:51
Doris Kearns Goodwin on watching JFK grow as a candidate and leader
08:48
'I will not have any jurors intimidated': Judge issues warning during trial
12:39
Doris Kearns Goodwin re-lived the 60s with her husband for 'An Unfinished Love Story'
07:51
A call for people to take control of our democracy: Eddie Glaude on his new book