in addition to paying for their air fare , that they require BTA... Internet Financial Scams - US Embassy in London
london.usembassy.gov/.../internet_...
Embassy of the United States, London
Beware of anyone who requests funds for a BTA, or Basic Travel Allowance, as a requirement to depart another country for the United States. There is no such thing as a BTA. In other cases, your Internet friend will claim to need a travel allowance, or travel money, to be able to travel to the United States.
"Second only to flight money, the Basic Travel Allowance (BTA) is the scammers highest paying income.
Also known as the Personal Travel Allowance, Travellers Allowance Fee, Travellers Assistance Fund, Travellers Assurance Fund and numerous other forms of “I have to have wodges of your cash or they won’t let me fly”. Let’s get this over with now … THERE IS NO SUCH THING any more, anywhere, it’s an online dating scam."