Can I apply for a US green card and a UK green card at the same time?

American green card and British green card can be applied at the same time. According to the information of the immigration authorities of relevant countries, American green cards and British green cards can be applied at the same time and will not be mutually exclusive. According to the information of immigration authorities in Britain and the United States, holding a green card in another country is not a reason to refuse an individual to apply for a green card in that country. That is to say, a citizen can hold green cards in two or more countries at the same time, and a citizen can apply for a green card in Britain and the United States at the same time, which can be protected by law.