Suggest you check at cbp.gov or travel.state.gov as well, to understand the following.
http://www.delta.com/planning_reservations/plan_flight/international_travel_information/visa_passport_information/index.jsp
/ 15MAR07 / 0235 UTC
National PARAGUAY (PY) /Transit U.S.A. (US)
Destination BAHAMAS (BS)
ALSO CHECK DESTINATION INFORMATION BELOW
U.S.A. (US)
U.S. DEPARTMENT OF HOMELAND SECURITY, U.S. CUSTOMS AND BORDER
PROTECTION (CBP) TEMPORARILY SUSPENDED BOTH THE US TRANSIT
WITHOUT VISA (TWOV) AND INTERNATIONAL-TO-INTERNATIONAL (ITI)
PROGRAMS UNTIL FURTHER NOTICE.
Those intending to transit the U.S.A. must comply with entry
requirements. Please make entries applicable to destination
U.S.A.
All passengers arriving from any country, except those
pre-inspected in Canada, must deplane the aircraft and proceed
directly to either the Federal Inspection Services (FIS) area
for inspection, or to an CBP-approved (Customs and Border
Protection) in-transit/progressive clearance lounge. Those
passengers going to the in-transit/progressive clearance
lounge will go through a CBP inspection.
Until further notice, all in-transit passengers and passengers
on progressive flights will be inspected at the first U.S.
port of arrival. This supersedes previous in-transit passenger
processes. These new procedures also require CBP inspection of
progressive flights (flights clearing passengers at more than
one port) at the first port.
Non-compliance with transit requirements will result in fines
varying between USD 2,000 and USD 3,000 per passenger at
transit point (detention costs at carrier's expense).
Fines for incomplete/inaccurately filled out I-94W Forms are
USD 1,000.- per passenger.
BAHAMAS (BS)
Passport (must be valid for at least 6 months after entry)
required.
Visa not required for a max. stay of 2 weeks.
Visitor must hold:
- return or onward ticket; and
- sufficient funds; and
- all documents required for next destination.
