China passport from Canada to the United States.

You are not the fastest. It is normal to submit an application for materials.

You can apply for B 1/B2 in the United States, if you are awarded the best.

You can go directly to America or Canada.

Another way is that the United States and Canada have bilateral agreements. You can apply for a tourist visa to the United States, especially the kind of travel agency that has a tourist route from Canada to the United States, which is easier to help you apply.