You can travel there, and you will have an easier time to get admitted than others as you are American, though if they suspect that you may overstay and become illegal while waiting for your PR they will refuse you. Individual officers vary.
janchel said:Yes, I will be applying for my PR in the USA, after marriage, but wanted to know..is it complicated to travel to Canada after you receive your new passport, while you are awaiting for the PR to go through? I may want to travel there for a few weeks during the wait. USA immigration said it is no problem, but I havent talked to the Canadian side as of yet. Anyone know? Thanks in advance.