If you, as a US person, receive a gift of more than $100,000 from a foreign person, you are required to submit a Form 3520 to the IRS. Form 3520 is an informational form only and is not part of the Turbotax program.
IRS Form 3520 - http://www.irs.gov/pub/irs-pdf/f3520.pdf
IRS Form 3520 instructions - http://www.irs.gov/pub/irs-pdf/i3520.pdf
http://www.irs.gov/Businesses/Gifts-from-Foreign-Person
