Bush's plan, announced Monday night, faces particularly stiff opposition from within his own Republican party in the House because of what some conservatives perceive as an element of amnesty.
Rep. Dana Rohrabacher, R-Calif., took issue with Bush's distinction between a legalization process for illegal immigrants and amnesty.
"If they are here illegally and you make them here legally, that is an amnesty," Rohrabacher told CNN.
Rep. Tom Tancredo, R-Colo., said on Fox News that Bush's plan to give some illegal immigrants a way to work their way to citizenship is "not fair" to those who have "been waiting for years outside the country to come in."
Bush said he has five objectives: secure borders, a temporary worker program, make employers responsible for hiring legal workers, create a mechanism to allow those who are currently here illegally to make their status legal and help immigrants learn English and assimilate.