Your wife would have to sponsor you for permanent residency. As a Canadian citizen, she can sponsor you for PR in Canada while you are both living in the US but you would have to prove intent to reside in Canada when you get it with a job offer, real estate or something of that sort. It would be easier if she is living in Canada when starting that application. Then you have a choice of inland or outland which is whether you want to move with her to Canada and sit there and not work for several months while you wait for work permit (inland) of if you wait in the US, able to work there and you can visit back and forth (outland). The outland application is faster.
For more info go to immigration canada at http://www.cic.gc.ca/english/index.asp
pick immigrate and sponsoring your family.