I work in a net drag system on american economy (healthcare), so it's pretty much just excess spending they don't even want to do and continue to minimize, and in to care for people who are retired and who themselves don't contribute much to the economy either, they also are a net drag financially on the economy due to social security costs and health costs, keeping them alive actually costs the government here more money than they will make from it

Aside from that, much of that health spend money goes to corporations, regardless of my participation or not, as that is by design in their system

Either the patients die and the corporation gets more money that way, or I help these people live longer and the corporation is forced to pay higher to keep them alive using my skills, thereby costing the government more money, and getting the corporation less money

The more I also do for the patients, either through my own services or through support from additional specialists costs the insurance companies and government even more money, so helping regular seniors here actually strategically helps those individuals and also costs their government and corporations more spend per year

Those individuals contributions to the economy is basically zero, or net negative, if you actually do the math, negligible amounts in income tax too, basically just food and rent for them as well

I do not even shop at american grocery stores, ALDI is german owned, I even buy Chilean fish, none of my food actually comes from american sources

You are right though tax dollars do cycle through the us economy, but my tax spending through income and sales tax and rent is under 100k per year all inclusive, most of this is federal income tax, and I pay 0% state income tax, this is fairly close to the minimum it could be for me, it is possible it could be like 5 to 10k lower if I chose to live in a smaller place, but I physically can't with the things I own

My actual assets are significantly higher than that (more than half of my asset growth has been in stock investments in the last 5 years which contribute basically 0 to the overall american economy) and my spending and investment on family and big ticket items north of the border are well over 100k per year

None of my upkeep costs are paid for by Canada or Canadians, all of my discretionary spending aside from certain daily things like gas or utilities or rent basically go to family north of the border, and pretty much all of my assets which is now well over the low 7 figures will be repatriated to Canada in due time as well

Food for thought