I lived in the US for a while. I knew people in the consular office in California who shared the stats on Canadian movement into and back out of the US. 75% of Canadian immigrants will repatriate within seven years. I was an over achiever, it took me 9.

There are advantages to being down there, but they are all centered in being childless and in good health. Everyone is one chronic illness away from bankruptcy. I was a post-doc at UCLA and my wife was a lawyer. The health insurance we could afford didn't allow us to get treated at the hospital I worked at. As a matter of fact we basically had to choose between preventative care and acute care because our policy wouldn't cover both.

The public school system has been so eroded it is basically useless, so you will have to use a charter school.

I enjoyed my time there, and California is a great place to be rich, but it gets much harder as you settle in and face actual adult life there.