There is like NO support for Canadians in California, except for slightly in San Francisco, and then it's only because that city is notorious for being universally tolerant. We, to them are "aliens" and "foreigners" but even worse so because we sound like them. And they hate that. I guess it's like New Zealanders in Britain; they sound enough like the British to fit in but they are foreigners to the
UK, and have to be here on visas just like Canadians and Aussies and Americans. Of course the difference is the level of violence in California and in the States against you if you're "different." I hope you don't have my experience, in that I was treated like being Canadian was some sort of betrayal to the United States, and like it could be beaten out of me or worse. As for working there, the Canadian Consulate office in Los Angeles should have some sort of list of Canadian-friendly businesses, they always have whatever the country they're in, allows them to have. What it will consist of is Canadian-run businesses, listings like
Air Canada and the Royal Bank of Canada, and other Canadian things that are there or in the area. I wouldn't say the exact same thing applies in the USA but over here in the
UK you almost have to be working for the Canadian Embassy itself or for
Air Canada or be a journalist for the Toronto Star stationed here, or stationed in the military over here in order to work here, otherwise, for everything else they prefer their own citizens, even if it's a severe shortage work area in which they SAID they would take anyone from any country. The States and the
UK are alike in that they never mean what they say in recruitment, that they'll take anyone from "any" country and get a work permit for that person, etc. The advantage that you have in the States is that you will at least sound pretty much like them, so it's not as if everything out of your mouth gets you accosted with "you're Canadian!" with whatever that means they're going to do to you. You can blend in there better than you can over here! There at least it'll be more like "you're one of us" with whatever way that entails that they are going to treat you.
My advice, after many years of suffering in that Evil Empire known as the States, is that if you really want to stay there just try to blend in. California doesn't ask for proof of citizenship for a drivers' license, and if you can get a Social Security number (theirs have the same number of digits as ours, just rearranged slightly) then you'll "pass" for American.