The email you received is a hoax (dating from 2001) and the statistics quoted are incorrect.
You can read a rebuttal to the email here: http://www.snopes.com/inboxer/outrage/nogas.htm
In summary:
- Citgo imported ~2 million barrels from the Mid East per month in 2002
- Conoco has been part of Philips for nearly 10 years; together they imported ~ 1 million barrels per month in 2002 from the Mid East
- BP owns Amoco, but not Philips; they import about ~10 million barrels a month from the Mid East
- The rest (Sunoco, Sinclair, and Hess) import their supplies mostly from Canada, which produces oil from the Artic, and from nations in Africa and Asia that are centers of Islamic Fundamentalism and which are known to house terrorists, such as Angola, Nigeria, Malaysia and Indonesia. (These are smaller regional brands; only Hess sells its gas in the NY/NJ metro area.)
It's worth noting that in March 2004, only 23% of crude oil was imported from the Persian Gulf. We got more crude from both Mexico and Canada than we did from Saudi Arabia.
You can read the complete list here: http://www.eia.doe.gov/pub/oil_gas/petroleum/data_publications/petroleum_supply_monthly/current/txt/table_35.txt
Also, note many of the producers band together to manufacture their various brands of gasoline at the same facility, using the same source material. Shell and Texaco for instance share refining capability in Louisiana. So you really have no way of knowing where the crude came from that was used to produce the gas you buy from your local retailer.