The Biden administration and more than 4,000 migrants who were separated from their families at the U.S.-Mexico border by the Trump administration have reached a legal agreement that can be seen as a milestone in U.S. immigration policy. The settlement, announced by the Department of Justice, has several important dimensions, NBC News reported:

1. Family reunification: The agreement allows families separated during the Trump administration to live and work in the U.S. for three years while receiving assistance, including housing, mental health care, and legal assistance to apply for asylum. This represents a crucial step in trying to reunite families who were affected by one of the previous administration's most controversial policies.

2. Prohibition of family separation: The agreement prohibits the federal government from separating migrant families who cross the border for eight years, except in cases where the parents are deemed a danger to their children or the public. This prohibition is intended to prevent similar separation practices from being repeated in the future.

3. Political challenges: However, the deal could face challenges from Republicans in Congress, who could challenge funding for reunification and service delivery to separated families. This could become a point of political and legal contention.

4. Object of challenge: In addition, the deal could face objections from conservative groups such as America First Legal, led by Stephen Miller, a former adviser to Trump and architect of the family separation policy. Therefore, its implementation may not be straightforward.

5. Financial compensation: The settlement does not include financial compensation to the affected families, although some of them have sought compensation in civil courts. The Biden administration has abandoned the financial compensation negotiations that were initially discussed.

The agreement is considered a necessary step in dealing with the legacy of a controversial policy that resulted in the separation of immigrant families. While it cannot completely erase the suffering these families have endured, it represents an effort to reunite those who have been affected by this policy and prevent similar practices in the future. However, its implementation and acceptance may be the subject of additional political and legal debates.