European consultant: living and working in the USA, employed in Canada

I am from Europe and a consultant employed by a Canadian University, but I live in the USA (I moved to the USA as my husband received a J1 visa). So now I am trying to figure out where to pay taxed? Do I pay taxes to that the USA, or to Canada (in non of these countries I have a social security number). Can anyone give me a advice?
Thank you.