That was done by Brian Cookson
"By 2014, just months into his new administration after being elected as UCI president the previous fall, Cookson decided it was time to
close the loophole and insist that all TUE requests go through a three-member review panel.
a favored asthma treatment, was taken off the banned list in 2010. The number of TUEs dropped from 97 in 2010 to 30 in 2013.
By 2015, only 15 TUEs were issued during the entire racing season. Cookson also insisted the
Cycling Anti-Doping Foundation, founded in 2008 to run anti-doping controls, is more independent than ever, and operates as an stand-alone operation rather than under the UCI’s legal department"
Source Velonews.