USA, Canada / What does a Polish person need to visit the USA under the VWP - Visa Waiver Program? [12]

Hey all. Let's get to it. I was visiting family and friends in the summertime in Poland and met a cool girl. I'm thinking of having her come to me to the USA for just a visit. I heard Trump has put Poland on the visa waiver free program which is exciting. So all my lady friend needs is a Polish passport and a airline ticket am I right? I just want to be sure on everything before I talk to her. Thanks all. I will be checking the forums once a day.