Imagine that you are sitting in line for a visa interview and then you get a question that you cannot answer. You may have been so relaxed going into this process as you thought that you had everything figured out. The problem is that because you were not talking to an expert there may be something that you have missed. Now you are in no position to make the necessary changes as you are not able to answer the question that is being posed to you by an immigration officer or visa interviewer. That puts you in trouble if you want to go into the USA.
While you may think that Canadian immigration in Vancouver BC is easier if you want to get into the US, you are still someone who has to go through all the relevant checks. They are not going to make it easy for you to get a work visa if that is what you want. Even if you have a company that is willing to sponsor you, you are going to have to think about this process so carefully. The best thing that you can do is to talk to an immigration attorney about the matter right away.
The reason why you will want a lawyer is just to get some expert advice. That is what you are going to be able to get when you are talking with them about what is going on. You will find that you are getting so much help and everything is going so smoothly. They will explain to you what is going to be asked at your interview and what documents you are going to have to bring. Then you will go ahead and do those things and remember all the relevant answers so that you do not make any slip up.