If you are a law abiding citizen of the United States its easy to get a passport. Most people don't have one cause they can't afford to visit other countries.
Those people are protesting VACCINE passports, Not proper identification. If every person coming across the border was able to present a valid passport and I.D., they would be welcomed and integrated into the U.S. as quickly as is safely possible. I'm sure many could care less if people immigrating to the U.S. were vaxed for covid or not.
I could care less about what Fox News and the rest of the media has to say on the issue, but I think it is important that we make a distinction between 'valid papers' (for immigration) and vaccine passports (for business and vacation travel).