With the addition last night of several companies in Michigan, New York, and Tennessee, there are now 600 American companies and associations calling on Congress to renew the Generalized System of Preferences (GSP) program.

Swift legislative action is more important than ever: after August 1 the Congress is likely to be in session for just 3 of the next 15 weeks. If GSP renewal slips until after the November elections, companies will pay at least another $200 million in unnecessary taxes on top of the $650+ million paid to date.

Who are those companies? They are geographically diverse – based in 44 states and 275 congressional districts (plus DC and Puerto Rico). About 80 percent are small businesses, with the typical company employing 15 American workers, but a number of Fortune 500 companies are impacted as well. And the companies on the list are just the tip of the iceberg when it comes to those likely impacted by GSP expiration.

If you’re not on the supporter list yet, please add your name here. Be sure to also use our Senate and House contact pages to let your Members of Congress know that GSP renewal is “must-pass” legislation before the August recess.

Finally, join the conversation on Twitter by using the hashtag #renewGSP – we’ll be sure to retweet and encourage others to as well!. You can also click below to tweet any/all of the following messages: