And those laws don't work if we have 15-20 million undocumented immigrants, do they?
Also, who are you referring to as "undocumented Immigrants"?
It's not Refugees, because under the UN Refugee Convention of 1951, those identified as Refugees are entered into the system and vetted (which would require documents) before being resettled.
It's not Asylum Seekers, because they are not allowed to seek asylum, until they are granted a hearing, vetted and documented into the system. Roughly 35% of the asylum claims are approved (that number decreased in 2024 due to an increased number of false claims), and those who are not approved and are awaiting deportation, are still documented while not on a path to Citizenship as Immigrants.
It's not Expired Visa Holders, because they are documented and their documents have expired. They can petition the court for a hearing, but that is not necessarily a path to Citizenship, and they are not Immigrants.
It's not those with Executive Parole, because they are documented, entered into the system and allowed to enter the country, but they are not on a path to Citizenship, parole can be revoked or expire at any time, and they are not Immigrants.
It's not those with Temporary Protected Status, because they are documented entered in the system, their status is temporary, and they are neither on a path to Citizenship, nor are they Immigrants.
It's not those here illegal that we don't even know about, because they may very well be undocumented, but they are not on a path to Citizenship nor are they Immigrants.
So, when you refer to "undocumented immigrants" are you referring to children under the age of 14 who have stayed in the United States longer than 30 days and have not yet been fingerprinted and documented as would be required otherwise, and in accordance with Alien Registration Requirements as required by the Immigration and Nationality Act (8 U.S.C 1302)?