Thank you Bigjoe5 for your quick answer.
I had been worked at u.s. before. But I back to canada last year for a while. I met my current husband by internet, then I met him at u.s as a tourist, we visited each other between canada and u.s., Now we got married at u.s. and plan to apply for green card. My status now is marrying u.s. citizen as a canadian tourist. ( is it a problem for applying for green card?)
Do I need fingerprint for I-485 application? if so, where should I do for it? I did fingerprint in canada 5-6 years ago when I applied to be a canadian citizen, if that fingerprint still work,how can I get such document from canada?