endorsement ad from "the duck dynasty" patriarch. >> our qualifications for president of the united states, is he or she godly? does he or she love us? can he or she do the job? finally, would they kill a duck and put him in a pot and make a good duck gumbo? ted cruz is my man. he fits the bill. >> reporter: town halls in iowa, cruz has dismissed the citizenship controversy as a a sideshow. >> i have never breathed a breath of air on this planet >> i choose him as my vice president presidenttial candidate and the democrats sue because we can't take him along for the ride? i don't like that, okay? >> donald, you very kindly just a moment ago offered me the vp slot. i'll tell you what. if this all works out i'm happy to consider naming you as vp. >> reporter: tonight cruz also took fire on this story, the "n york times" breakin cruz d his wife failed to disclose