On a recent edition of the C-SPAN series "Road to the White House," the Delaware senator is shown shaking hands with a man and boasting about his support among Indian-Americans.

"I've had a great relationship. In Delaware, the largest growth in population is Indian-Americans moving from India. You cannot go to a 7-Eleven or a Dunkin' Donuts unless you have a slight Indian accent. I'm not joking," Biden said.

"The point Senator Biden was making is that there has been a vibrant Indian-American community in Delaware for decades. It has primarily been made up of engineers, scientists and physicians, but more recently, middle-class families are moving into Delaware and purchasing family-run small businesses," said Margaret Aitken, a Biden spokeswoman.

"These families have greatly contributed to the vibrancy of the Indian-American community in Delaware and are making a significant contribution to the national economy as well," she said.