CONFUSED NEED HELP!!!!!!!!

hello to every one, my name is peter and i have confusing question and i really need answer for it.
im married to a canadian citizen and i we want to file for immigration to canada, but curently i live in the USA ...i came here on ourist visa then i overstayed because i had fears from going back home....they had me on removal proseedings because i ovewrstayed but i filled for asylum with the immigration judge and my claim is still pending and it seems like its gonna take a while to get any dessisions. my passport is expired and i cant go back home to renew it.
so now whith my setuation in the US , can i apply for canada immigration and have my aplication prossesed in buffalo or do i have to go back home even though i cant go because i have fears from going back ?? i would really apreciate it if anyone have an answer for me.