What is the political asylum system in western countries?

Political asylum is an ancient judicial concept, which shows that people persecuted for different political or religious beliefs can be sheltered by other sovereign forces. The western political asylum system is represented by the United States, Britain and France. The United States grants individuals the right of political asylum in accordance with international law and federal law. Since World War II, many asylum seekers have obtained the right of political asylum in the United States. Some scholars compare the political asylum procedure in the United States to a "roulette game". The political asylum system in Britain was formed in the19th century. At that time, Britain granted asylum to all kinds of people persecuted by politics, a considerable number of whom were socialists, including Karl Marx. Political asylum in France was recognized by the Constitution of 1958, but the French government amended the immigration law in 1993, and the political asylum system became stricter and stricter. In international law, granting political asylum and refusing extradition are matters within the scope of national sovereignty. But this is limited to political prisoners, and ordinary criminals cannot be allowed to take refuge. This kind of law is very common, but at present most political asylum seekers have gone to western countries.