One of the most controversial aspects of the Alvarado Quesada administration was the approval by the Legislative Assembly of the Law for the Strengthening of Public Finances, popularly known as the Fiscal Plan, which was opposed by both the right and the left, but it was supported by the benches of the majority parties; PLN, PAC and PUSC (ranging from center-right to center-left). Opposition to the project led to the 2018 Costa Rican union strike, one of the largest in recent history, but which did not have the effect of stopping the project.