If this isn't a hell-of-a-note....

The U nonimmigrant status (U visa) is set aside for victims of certain crimes who have suffered mental or physical abuse and are helpful to law enforcement or government officials in the investigation or prosecution of criminal activity. Congress created the U nonimmigrant visa with the passage of the Victims of Trafficking and Violence Protection Act (including the Battered Immigrant Women’s Protection Act) in October 2000. The legislation was intended to strengthen the ability of law enforcement agencies to investigate and prosecute cases of domestic violence, sexual assault, trafficking of noncitizens and other crimes, while also protecting victims of crimes who have suffered substantial mental or physical abuse due to the crime and are willing to help law enforcement authorities in the investigation or prosecution of the criminal activity. The legislation also helps law enforcement agencies to better serve victims of crimes.

-- The limit on the number of U visas that may be granted to principal petitioners each year is 10,000. However, there is no cap for family members deriving status from the principal applicant, such as spouses, children, or other eligible family members.

-- If the cap is reached before all U nonimmigrant petitions have been adjudicated, USCIS will create a waiting list for any eligible principal or derivative petitioners that are awaiting a final decision and a U visa. Petitioners placed on the waiting list will be granted deferred action or parole and are eligible to apply for work authorization while waiting for additional U visas to become available.

-- Once additional visas become available, petitioners on the waiting list and those who have received a bona fide determination will receive their visa in the order in which their petition was received. Petitioners do not have to take any additional steps to request the U visa. USCIS will notify the petitioner of the approval and the accompanying U visa.

In other words... Did you stop beating your Wife, Miguel? Wife, can petition, then the kids, and their kids, etc.