Are there any white professional boxers?

i see a lot of Hispanic boxers and a few black boxers but i've never seen recently a white boxer? are there any? can a white guy make it in boxing? idk what race would have to do with anything but jw and also how high up are you sposed to wear your boxing trunks? i saw a boxer with a waistband high up and a boxer with his waistband low... which way is right? another question last one i promise how old do you have to be to turn pro in boxing in the USA