I landed on may 7 2007 then returned to Usa in july 2008 but during my one year in canada i wasnt working coz was taking classes online for a usa uni.....am returning in jan 2011 finally n mmy pr expires in june 2012.....during my 2 yr stay in usa i became a naturalized us cittizen in july of 2010.......so do i briing both passports when i re enter canada and inform the IO? will i have problem renewing my pr n how early should i appy to renew....how may the want to to account for the first one year apart from the stamp on my visa?