The Immigration and Control Act of 1986 increased the possibility of Mexican immigrants bringing in family members illegally.

The Immigration Reform and Control Act (IRCA) of 1986 was a law passed in the United States that sought to control and deter illegal immigration. The law made it illegal for employers to knowingly hire or recruit unauthorized immigrants, granted amnesty to certain seasonal agricultural illegal immigrants, and granted amnesty to illegal immigrants who entered the United States before January 1, 1982 and had resided there continuously.

However, the law did not necessarily increase the possibility of Mexican immigrants bringing in family members illegally. While it is true that the law did not provide a clear path for family reunification, it did not explicitly encourage or facilitate illegal immigration of family members. The law was primarily focused on controlling illegal immigration through employer sanctions and providing a path to legal status for certain groups of illegal immigrants already in the country.

It's important to note that the effects of immigration laws can be complex and varied, and can depend on a variety of factors including enforcement practices, economic conditions, and the specific circumstances of individual immigrants. Therefore, while the IRCA may have had various impacts on immigration patterns, it would not be accurate to say that it directly increased the possibility of Mexican immigrants bringing in family members illegally.