In the past several days the Mexican government had taken unprecedented action to closed several low cost budget airlines. Some of the violations include hydraulic fluid leaks, pilot training, & failure to pay require aviation taxes. The problems started with the financial crisis of the global recession. Many Americans travel on these low budget foreign carriers, but it would be wise to do your homework & check for the safety record of these air carriers. Some of these carriers fly routes from Las Vegas to Mexico City. Some of these issues that these air carriers are going through maybe small, but when you but it all together it could lead to an accident.