All states require tipped workers to make at least minimum wage, that's what a minimum wage is. However, usually they can make part of that wage in tips. In theory, if they make less then minimum wage in tips plus hourly wage, the employer is supposed to make up the difference. In practice, that doesn't always happen.
Rather than tipping more, have you considered not visiting third world hell holes? Canada's real close, but they have a civilized nation up there.