The bumper sticker reads: "Welcome to America / Now Speak English".
The license plate reads "THREDZ".
Do I need to say more?
Maybe I do. My grandfather came to the US in 1912. For many years he spoke only Yiddish and very broken English. Despite this, he managed to start a business and raise a family.
There's no requirement that immigrants to the US speak English fluently. The vast majority of them will learn English because it is in their economic self-interest. And their children will almost certainly speak English - probably better than the owner of this car, who can't seem to spell "threads".
[Yes, I know, it's the name of his business. There you can find other logically and/or grammatically suspect utterances, such as "Experts in embroidery, screen-printing and sourcing products with creative distinction are just a few of the things that set Thredz Unlimited apart from others."]
