It's safe to assume that most US universities with PhD programs have openings every year and they are going to sponsor you for a visa.
The difficult part is identifying professors that you'd like to work with.
The difficult part is identifying professors that you'd like to work with.
My emails were clear, simple and respectful. I guess they have better things to do than to respond to random stranger on the internet.
I wish there was a kind of a job board for PhDs ..