It is not just the threat of deportation that is hanging over Amparo Gonzalez. The 31-year-old single mother could also lose her job at a warehouse company, even if she stays in the country. With it would go the health insurance she gets through her employer, which covers her 13-year-old daughter, as well as the exams and treatments that Ms. Gonzalez needs for her chronic colon disease.

“I lose everything without DACA,” she said, referring to the Deferred Action for Childhood Arrivals program that President Trump moved this week to eliminate.

With the news that roughly 800,000 people across the country would begin losing their protected status under DACA, which offered work permits and temporary reprieves from deportation to young undocumented immigrants, the program’s beneficiaries are now scrambling to prepare for the various ways the decision could upend their lives.

Living and working in the United States are the two privileges most often associated with DACA. But for many recipients, those are merely the first dominoes to fall if Congress does not pass a replacement. The shutdown of the program could reverberate far beyond those privileges and topple the many others that DACA protection can confer, from state-sponsored health coverage and financial aid to driver’s licenses and professional credentials. The loss of these things could, in turn, disrupt recipients’ abilities to go to school, support their families and keep a roof over their heads.