Approximately one quarter of individuals living in California are considered immigrants. This means that 10 million people are living in our state were born in another country. However, there are different classifications of immigrants, and whatever category an immigrant fits in may also determine their eligibility under the Affordable Care Act.
With certain exceptions, legal immigrants are required to have health coverage by January 1st. Ones exempt of this requirement could be immigrants who cannot find what the act defines as affordable coverage. Unfortunately, it's not entirely clear as to which individuals with temporary visas will be required to have health insurance as of that date. This is a question that should be addressed to an experienced immigration attorney.