Hispanic....?

Normally i tried not to copy text from news, but in this case it is necessary, so here we go:
"(AP) Gov. Bill Richardson, D-N.M., said Sunday he is taking the first step toward an expected White House run in 2008, offering extensive experience in Washington and the world stage as he seeks to become the first Hispanic president. "
Mr. Richardson, governor of the state of New Mexico, should not be using the word Hispanic as a description of his ethnicity.
This based on the fact that ONLY her mother ,Maria Luisa Lopez-Collada, was Mexican. His father , William Blaney/Blaine Richardson was from Boston.
The actual Governor spent sometime in Mexico city ( until he was 13) because his father was an executive for Citibank, after that he moved to
Massachusetts, where he continued his High School.
Perhaps the use of the "Hispanic" word was appealing to the voters of New Mexico where a lot of Hispanics of Mexican descent live.
But we are now playing politics in the Big Country, where Hispanics come from different countries.
I think the most appropiate way to define his ethnic background will be
" American with Hispanic ancestors" or "American from hispanic descent."