“I have not endorsed Ron Paul’s candidacy in any 2010 primary, so there is no comparison.”
Everybody knows you endorse Paul’s agenda.
However, endorsing a candidate does not mean you endorse their entire agenda.
Reagan endorsed Pete Wilson among many that he did not support their entire agenda.
Palin endorsed McCain's stance on immigration, which is publicly known.
"I support [McCain's] position on immigration."
FMR. GOV. SARAH PALIN, 27 MAR. 2010