There are various groups who have great ideological, political, financial and emotional investment in matter of surrounding minimum wage law. as discussed in pros and cons of minimum wage many of the economists agree to eliminate it as it costs thousand jobs for economy, part timers, teenagers get a limited access and opportunities to jobs.
Whereas some economists think adults that are working in jobs at minimum wage may loose their jobs to young workers working on lower wages. And also businesses may get chance of abusing labour market.