Close , but no cigar billshar.
If they are paid for working in the US, that income is DOMESTIC U.S. income, and is not covered by the Foreign Earned Income exclusion of US$80,000 for tax year 2002.
Even if you qualify for the Foreign Earned Income Exclusion, and have some days of work within the US, you must pay taxes on the income received for work done within the U.S.
There are 2 ways of qualifying for the Foreign Earned Income Exclusion: official residence in another country, OR being absent from the US and its territories for at least 330 days out of 365 days.
The rules are also different for those foreign citizens who have a U.S. Green Card, and their presence in the US and taxes owed.
Talk to a US tax attorney for specifics.
Regardless of your absence as a US citizen, you must still file a 1040 tax return annually if you earned money or were paid interest, dividends, had capital gains, etc. ANYWHERE in the world, or you face the possibility of having the Foreign Earned Income Exclusion revoked and then owing the full amount of income taxes on the full amount of earnings. If you don't file a 1040, there is no statute of limitations on the IRS for coming after you, and as well,they tack on penalties and interest galore. They always have a hook.