The law in the U.S. allows a person legally admitted into the U.S. to purchase a firearm, if not under a regular Visa and as long as the person has a clear background, since a person is just admitted into the U.S., a background is not yet established.

The "ICE Secure Docket Card program" created by the Biden administration will place the undocumented alien in a temporary legal status as they navigate their immigration cases or removal court proccedings while living in your state.

Therefore, such ID will allow access to obtain Drive Licenses, Social Secure Cards (SSN) and Concealed Carry Permits.

ATF, the government agency that control the firearm industry, establish that:

"A nonimmigrant alien who is lawfully admitted to the United States without a visa (e.g. Visa Waiver Program), may acquire or possess a firearm in the United States, provided that he or she is not prohibited from shipping, transporting, receiving, or possessing firearms or ammunition in the U.S."

As social media networks shows a huge influx of airplanes, buses, caravans with new undocumented aliens, it is not possible to identify them as a noninmigrant or as immigrant.

DHS has not yet published any detals about any restriction it may impose to the ID Cards, every american should expect an immigrant as a likewise-concealed carry under the same lawful umbrella.