Undocumented Taxpayers Opportunity Act of 2019 This bill allows qualified alien taxpayers to obtain provisional immigrant status and establishes procedures for provisional immigrants to obtain permanent resident status. An alien shall qualify if he or she has been assessed and paid taxes for each of the previous five years before applying for such status. The Department of Homeland Security may grant provisional immigrant status to qualified individuals who pass security checks and are not disqualified for various reasons, such as an aggravated felony conviction. DHS may waive certain disqualifications for humanitarian or public interest reasons. Provisional immigrants shall be authorized for employment in the United States and travel outside the United States. Such individuals shall be ineligible for various federal benefits, including the healthcare premium assistance tax credit. Individuals going through deportation or removal proceedings shall be given a chance to apply for provisional immigrant status if they qualify. Provisional immigrants may apply for permanent resident status, subject to various requirements, including payment of federal taxes for the each of the previous three years. An alien may not hold provisional immigrant status for more than eight years.