Is Guam visa the same as American visa?

Same. Guam visa is the same as American visa, but if only Guam is indicated on the visa, you can't enter the United States. If there is no remark, you can enter the United States. The United States of America, for short, is the capital of Washington. Located in central North America, it borders Canada in the north, the Gulf of Mexico in the south, the Pacific Ocean in the west and the Atlantic Ocean in the east.