Internship providers (other than government agencies and not-for-profit agencies) are required by federal law to either pay or award academic credit to their interns. Compensation must be at least minimum wage or equal out to minimum wage per hour if payment comes in the form of a stipend. At present, Federal Minimum Wage is $7.25. Be aware that many states set their own minimum wage requirements. The State of Florida minimum wage is $7.25 per hour.
Government agencies and not-for-profit agencies are allowed to offer unpaid/no-credit internships without violating these laws. However, the Toppel Career Center recommends some sort of compensation.