Subject to the provisions of section
3902
(a)(4) of this title relating to discrimination, nothing in this chapter shall be construed to preempt the authority of a State to specify acceptable means of demonstrating financial responsibility where the State has required a demonstration of financial responsibility as a condition for obtaining a license or permit to undertake specified activities. Such means may include or exclude insurance coverage obtained from an admitted insurance company, an excess lines company, a risk retention group, or any other source regardless of whether coverage is obtained directly from an insurance company or through a broker, agent, purchasing group, or any other person.