Visitor visa, in both Canada and the US, are intended for short and occasional visits. You are not allowed to work or live in either. Both countries have the right to refuse you entry if they believe that you are using the visa to live in their country, rather than visit it.

Each time you enter each country you are gong to have to answer questions about what you are doing there, why you are making these regular visits, what you were doing in the other country, and how you are supporting yourself. The more times yo do this the more interested they are going to be in the answers and the less likely they are to let you in if they don't like them.

Now if you are wealthy enough that you don't need to work, or own a business that is supporting you, they will probably let you do this quite a few times. If not, they are very quickly going to wonder where your money is coming from, and suspect that you are working one one or both of the countries. At that point they will refuse you entry.

Visitor visa, in both Canada and the US, are intended for short and occasional visits. You are not allowed to work or live in either. Both countries have the right to refuse you entry if they believe that you are using the visa to live in their country, rather than visit it.

Each time you enter each country you are gong to have to answer questions about what you are doing there, why you are making these long, regular visits, what you were doing in the other country, and how you are supporting yourself. The more times yo do this the more interested they are going to be in the answers and the less likely they are to let you in if they don't like them.

Now if you are wealthy enough that you don't need to work (and can show that), or own a business that is supporting you (and can show that), they will probably let you do this quite a few times. If not, they are very quickly going to wonder where your money is coming from, and suspect that you are working in one or both of the countries. At that point they will refuse you entry.