More than 3.4 million people have fled Venezuela since 2014. Those who remain grapple with food and medicine shortages as President Nicolás Maduro refuses to give up his authoritarian regime and let humanitarian aid into the country. In January, Venezuela's opposition leader Juan Guaidó challenged Maduro and declared himself interim president, as Venezuela's constitution allows the head of National Assembly party to do. Once unknown, the 35-year-old has now gained the support of many Venezuelans and 65 foreign countries, including the U.S., Canada and U.K. He returned to Venezuela Monday after a trip abroad to rally support from the international community. Venezuelans expats, however, appear split on how Guaidó should use his role as interim president — and whether he should support U.S. involvement in the conflict.