The push for a permanent repeal of the Affordable Care Act’s medical device tax has gained significant momentum with two more letters to Congress — one from 13 patient advocacy, disability, research, and community healthcare organizations; and another from Research!America.

Devicemakers across the U.S. have been pushing for the repeal of the 2.3 percent excise tax, which went into effect in 2013, but is currently suspended through Jan. 1, 2018.

Earlier this year, representatives of 36 conservative groups sent a letter to Congress urging lawmakers to block the return of the device tax on Jan. 1, following the two-year suspension under the Consolidated Appropriations Act of 2016.