To reduce the number of illegal/undocumented migrants that need to be forcibly removed, extend an amnesty period, starting as soon as possible along to finish around March 2025.
The amnesty states that every migrant that illegally entered into the US, will not be prosecuted if they remove themselves or turn themselves in for deportation back to their country of origin. As a result, these migrants will not be penalised going forward if they attempt to gain access to the US via the legal process at a later date.
This will be in conjunction with a stern warning about the nature of the upcoming deportation effort. Any migrant that does not take advantage of the amnesty will be subject to the full force of local law enforcement, ICE, DHS and border patrol. Deportation through the forced option will result in the migrant being banned from future legal immigration attempts.
To reduce the inevitable public outcry from left of center citizens, the federal government could encourage donations to specific NGOs to help voluntary migrants get back to their countries of origin in a way that is considered humane and dignified.
Messaging can include wording about getting the US back on her feet and strong before we can help other nations.
Use the carrot first before resorting to the stick…