Lack of code enforcement, overcrowding and substandard units, racism, and grower power. Responsibility for migrant housing must be transferred from the growers, except perhaps from those who are doing a good job of providing housing. Government migrant housing must be supported by government funding and meet minimum standards, both in the home base and stream states. There must be an adequate supply of units. A major problem is overcoming resistance to this low cost housing.
Stereotypes cause it to be seen as contributing to welfare and education costs.
In addition, something must be done to control illegal immigration. Amnesty and immigration reform has ironically led to worsening of housing problems. More immigrants continue to come, and many of those granted amnesty now wish to bring their families. This worsens the pressure on the limited existing housing. More are competing for the few units.