States around the country are clamping down on pharmaceutical companies, forcing them to disclose and justify price increases, but the drug manufacturers are fighting back, challenging the state laws as a violation of their constitutional rights. Even more states are, for the first time, trying to regulate middlemen who play a crucial role by managing drug benefits for employers and insurers, while taking payments from drug companies in return for giving preferential treatment to their drugs. (Robert Pear, New York Times)