I would like to have the chance to work in the US (about green card) after get my master degree.

I found the website that said about green card that provide
it to foreign students who have earned master or Ph.D degree in the US. a week ago. However, I tried to look at the page again, it is disappeared. I wanted to know what is going on.
https://petitions.whitehouse.gov/petition/provide-green-card-foreign-stu...