Visiting U.S from Canada need info

well next month i will be visiting Seattle to go to a concert from Vancouver. What i need to know is what information do i need to bring as i will be travelling on a greyhound bus. My passport is expired but i do have those new driver license card so im wondering if those work such as thishttp://www.redflagdeals.com/forums/showthread.php?t=711669

ya man take a car you can get there way faster than a greyhound. i believe you need a passport to get into the us now. i live in ontario but i think the new drivers license wont work.but im not 100% sure

I'm not clear on what you're asking. I was fairly certain you need a passport to move about the continent nowadays.

You need your passport to get back into the U.S. now even if you're a citiizen, so i would assume you need it to get in as a tourist.