enter USA
 

hi my bike is on a ship to seattle and i will follow in a few weeks . i have no return ticket to fly from bangkok to seattle .will the shiping papers be enough to show i have transport out of the USA

I don't believe you have to provide any evidence of an onward ticket or transport when entering the USA. When asked what you're doing here just say "tourist" and you're good to go. Residents of some countries must have a visa.

entry requirements
 

That is exactly our experience, entering the US beginning of May this year with single ticket into Boston and the bikes on a ship into New York.
We are Dutch citizens and made use of the visa waiver program. Just make sure you fill out the question list at least 72 hours before departure to the US. The list is somewhere on the internet.

Auke

And don't use any service that asks for money! It is free directly from the US government. U.S. Customs and Border Protection - Travel
Google will put fraudulent services that cost money at the top of the list if you search for "ESTA".