Not bad for a day's work!
Here are the signatories to the Hatch letter from the WaPost:
Orrin G. Hatch (R-Utah)
Mike Lee (R-Utah)
Mark Kirk (R-Ill.)
Angus King (I-Maine)
Michael F. Bennet (D-Colo.)
Bernie Sanders (I-Vt.)
Thom Tillis (R-N.C.)
Ron Wyden (D-Ore.)
Mark R. Warner (D-Va.)
https://www.washingtonpost.com/news/wonk/wp/2016/09/30/dea-defies-senators-appeal-to-reconsider-unprecedented-kratom-ban/
According to Forbes (whose coverage of this legal battle has been stellar) Ron Wyden also joined Kristen Gillibrand (D-NY) and Cory Booker (D-NJ) to send their own letter yesterday:
"While we understand there are times when public safety demands that your agency act quickly on scheduling decisions, we believe that in this instance additional time for the scientific community, public health officials, and other members of the public to comment is warranted and may prove to be in the interest of public health and safety," the senators added. "Since 1980, our federal prison population has exploded by nearly 800 percent. This increase is a result of draconian drug policies that continue to place nonviolent drug offenders behind bars. We should not, in haste and without adequate opportunity for comment and analysis, place substances in categories that may be inconsistent with their medical value and potential for abuse."
http://www.forbes.com/sites/davidkroll/2016/09/30/dea-delays-kratom-ban-more-senators-object-to-process-and-unintended-consequences/#59b1dd294f71
And a letter to AG Lynch was added yesterday by House Reps Mark Pocan (D-WI) and Hank Johnson (D-GA) asking her to intervene with a stay on the process:
http://imgur.com/a/UmyeR
The DEA hasn't responded, but they also didn't file yesterday as they originally intended, so we shall see what happens. For now, kratom remains legal and researchers can continue their work.