The St. Louis based pharmacy benefits manager Express-Scripts told the Center for Media and Democracy today that it had terminated its relationship with ALEC. The move was confirmed by Express Scripts head of Communications David Whitrap.

The disclosure comes at the end of a busy week for corporate defections from ALEC. On Tuesday, Express-Scripts competitor CVS announced it was cutting ties, along with four other corporations, including Hewlett-Packard Co., Best Buy, and MillerCoors LLC. In a statement, PFAW Foundation President Michael Keegan applauded the news:

The decision by these five companies to leave ALEC is an important step to do right by their customers. Their competitors who have yet to quit should know that the American people won’t forget who continues to underwrite ALEC’s agenda at our expense. Fortunately, more and more corporations, nonprofits and organizations are withdrawing their memberships. As a result, ALEC’s ability to push its dangerous agenda through our statehouses diminishes every day.

As more companies follow their competitors out of ALEC, the campaign to get corporations to ditch ALEC gains even more momentum. Those who stay with the organization will have to justify their support of an extreme anti-consumer agenda to their customers.

PFAW Foundation has taken an active role in exposing ALEC’s stealth role in promoting conservative legislation at the local, state, and federal level.

A comprehensive list of the corporations who have cut ties with ALEC can he found here.