You have many ways to get it to the USA. The easiest way is to buy it from a diplomate but not a Canadian one... As for the USA, French cars are not sold in Canada. You can also buy it in Mexico... or ship it from Europe.
If you ship it from Europe, you need to pay tax and the registration is a long and annoying process for NOTHING ! Since Europe has way more restrictions than the USA. Each countries have they own rules and the cars have to respect all these rules... The new Euro VI norm is also stricter than the one in California.