This study investigates the short-term effects of visa restrictions on the legal status and well-being of migrants, focusing on the mass displacement of Venezuelan nationals. Using a difference-in-differences research design, the research examines the impact of visa restrictions on migration flows in various South American countries. The analysis utilizes data from 85,000 migrants and refugees, primarily Venezuelans, surveyed by UNHCR. The findings indicate that visa restrictions have increased the likelihood of irregular entry and irregular visa status among migrants, leading to shifts in their priorities. Contrary to expectations, there is no evidence of increased violence against migrants using irregular entry channels in specific countries. This research adds to the academic and policy discussions on the effectiveness of visa restrictions and their implications for migrants’ well-being.