First, he went after Rosie O'Donnell, and now, reality television personality Donald Trump has found himself feuding with another 'View' co-host: Whoopi Goldberg.

The fight went down yesterday when Barbara Walters mentioned Trump's recent comments about wanting Barack Obama to show his birth certificate to prove he was actually born in the United States.

"I want him to show his birth certificate ... There's something on his birth certificate that he doesn't like," Trump said.

"I think that is the biggest pile of dog mess I've heard in ages," said Whoopi. And thus began another classic fight on 'The View.'

Personally... I think this it's sad to see some people, especially Donald Trump, question the validity of our President's citizenship. Don't you think there is some application and background check for the most important job in the world?? - Coop