The burden is on the negative to prove how the Chevron ruling would impact this specific affirmative – changes have to be based in special justification
Chaikovsky et al. (Yar R. Chaikovsky, Mark Davies, Ethan Plail, Edred Richardson) “Chevron is Done — What Does Loper mean for the PTAB and ITC?” July 01, 2024 https://www.whitecase.com/insight-alert/chevron-done-what-does-loper-mean-ptab-and-itc
The Supreme Court overturned 40-years of Chevron deference. Courts will now exercise independent judgment over agency statutory interpretation. Courts can still defer to an agency's statutory interpretation under Skidmore deference based on "the thoroughness evident in [the agency's] consideration." The decision expressly carves out "prior cases that relied on the Chevron framework. The holdings of those cases that specific agency actions are lawful… are still subject to statutory stare decisis." A challenger must provide a "special justification" to overrule Chevron-era cases.