Unfortunately I do not know the language requirements for US universities. Most of my family were past anything that they require so it never came up.
Are you a Canadian permanent resident or a Canadian citizen?
One thing that I wonder about is whether it would fulfill the language requirements for US schools if you were to take additional French courses over the summer. The ones that I am aware of are intensive programs in either the province of Quebec (Montreal and Quebec City), or in two of the maritime provinces (one in New Brunswick and one in Nova Scotia). I have heard that there are other courses in other provinces. There are programs for high school students and separate programs for older kids and adults. They have classes for students all the way from beginners who can barely say “merci” through students who are getting sort of close to fluent.
However, you would need to contact admissions at universities that you are considering in the US and see whether they would consider this as meeting their requirements.
Of course the community colleges near where you live might also offer French courses (this seems likely since you are in Canada).