Health insurance companies are exempt from the Sherman Antitrust Act

And the best solution Washington can come up with is mandating that we all purchase products from a private industry that is exempt from the first Federal statute to limit cartels and monopolies, and today still forms the basis for most antitrust litigation by the United States federal government.

I’m not a lawyer, but are federal health insurance mandates constitutional, especially when the private companies we’re forced to purchase from have federal protection from being a monopoly?