Thanks Leon!! but is it possible that my husand applies for my visit visa while being in USA and tells the Canadian embassy or whoever that he got married and i want to take my wife to Canada and wen he goes there he can apply for my sponsorship?
You can try it but sometimes they don't let you come as a visitor when they think you are planning to stay. What you can do is he goes to Canada, applies for sponsorship for you and then applies for visit visa for you with a dual intent for the purpose of visiting him and waiting for your PR to come through.
and secondly, he landed apprx 16 months before in Canada and at that time we were not married and after getting married he hasnt as yet declared his marital status...will this cause a problem!!!
I don't think it's a problem. He will declare his change in marital status when he applies to sponsor you.