No, I am a Canadian permanent resident. I received an e-mail from Toronto US embassy this afternoon mentioning cancellation of my visa interview. I have rescheduled the interview in 18th September but my class will start on 17th August. I sent them an e-mail explaining my situation but they replied back saying all the visa appointment in Canada are being cancelled through the month of July. It seems deferral is my only option. Very sad news for me, I was mentally well prepared to start my PhD studies. My admission was through a professor and now I have to contact him explaining my whole situation.