This article is from the FAQ, by with numerous contributions by others.
- Ability to leave/enter the U.S. at will without the risk of being
denied entry by an Immigration official at the port of entry.
- Right to apply for government-sponsored financial aid for education.
- Permission to work in any company located in U.S. territory
regardless of job function, hours/week, etc. except for some
companies that only hire U.S. citizens.
- Permission to start own business and create own corporation.
- To keep PR, the person must reside in the U.S. for a minimum number
of days per year (does anybody know what's the limit?)
- Permanent residents can get into welfare if unable to get a job.
- Permanent residents can sponsor spouse and unmarried children to
obtain PR status.
- Permanent residency can be revoked if the permanent resident gets
involved in illegal activities. An example is a case that was discussed
in this newsgroup where a permanent resident was deported for drug use.
- Permanent residents cannot vote.
- Permanent residents get Social Security benefits when they retire.
[see the next section regarding SS benefits]