Original sentence: Each American household will be able to request up to two coupons worth $40 to facilitate the purchase of digital-analog converter boxes.These requests for coupons may be submitted between the dates January 1, 2008 and March 31, 2009, inclusive
Edited sentence: Each American household was able to request up to two coupons worth $40 to facilitate the purchase of digital-analog converter boxes.These requests for coupons could be submitted between the dates January 1, 2008 and March 31, 2009, inclusive