Mr. Obama and Senate Democrats will propose the changes in one comprehensive bill, the officials said, resisting efforts by some Republicans to break the overhaul into smaller pieces — separately addressing young illegal immigrants, migrant farmworkers or highly skilled foreigners — which might be easier for reluctant members of their party to accept.

The president and Democrats will also oppose measures that do not allow immigrants who gain legal status to become American citizens one day, the officials said…

The White House will argue that its solution for illegal immigrants is not an amnesty, as many critics insist, because it would include fines, the payment of back taxes and other hurdles for illegal immigrants who would obtain legal status, the officials said.

The president’s plan would also impose nationwide verification of legal status for all newly hired workers; add visas to relieve backlogs and allow highly skilled immigrants to stay; and create some form of guest-worker program to bring in low-wage immigrants in the future.