How does someone come to America for Vacation? 10 uncomplicated points!!1?

We are planning to bring our Mom and sister for Vacation in America....but dont know where to start...

What do they both need? Any historic documents and where do they start??

Thanks so much for all the help..
Answers:   
first of adjectives, they both need passports. then they should apply for a tourist visa in the us embassy surrounded by their country.they have to establish that they have no intention of immigrating to the US or else they won't be given visas.

biddable luck
Valid passport and B1/B Visitor's Visa, if required.
http://travel.state.gov/visa/temp/types/...

If you are the citizen of Visa Waiver Program, then all you need is apparatus readable passport.
http://travel.state.gov/visa/temp/withou...
Visit www.uscis.com, they will tell you what to do and all the necessary documents needed. Passports

Resolved Questions:
8605-3.html

Moving to Australia from USA to be beside my gay partner?
I am an american citizen wishing to move to Australia to be with my gay partner. Is this possible? And what are the requirements? How much would this likely cost me? australian visa 310 is for same sex partners your partner will have to sponsor you http://www.immi.gov.au/migrants/family/p... I'm...