Claim: Portia de Rossi is an American.
Evidence: Portia Lee James DeGeneres -LRB- born Amanda Lee Rogers ; January 31 , 1973 -RRB- , also known professionally as Portia de Rossi -LRB- -LSB- ˈpɔərʃə_də_ˈrɒsi -RSB- -RRB- , is an Australian and American actress , model , and philanthropist.