GottaLaff , 
Via multiple sources who posted the vid:
Former VP Pious McKissAss Pence: I will not be endorsing Donald #Trump
ADDED:
Via Rupar:
"It should come as no surprise that I will not be endorsing Donald Trump this year."
ADDED:
Via David Corn:
Brave move for Pence: withholding an endorsement of a guy who almost got him killed.