It would have been an executive order the Trump administration reversed, he wouldn’t have had the authority to reverse a congressional passed law.

Looks like it was just the more recent DOE regulations that were reserved. These were for specialty bulbs. But with some of the states still enforcing the changes combined with other countries doing similar things, the manufacturers probably will move on to newer technology.

> In 2014, the Department of Energy issued regulations that would extend the efficiency standards of the 2007 EISA law to some specialty bulbs, effective January 2020.[91] The new standards would apply to Edison, globe, and candelabra bulbs among others. In February 2019, the Department of Energy announced a proposal to withdraw this change. In September 2019 the Trump administration rolled-back these energy efficiency standards for lightbulbs with the Energy Department's publication of regulations in the Federal Register.[92][93] The Energy Department announced the reversal of the 2014 regulation that would have taken effect on January 1, 2020 and implemented the last round of energy-saving light bulb regulations outlined by the Energy Independence and Security Act of 2007.[94]EISA law to some specialty bulbs, effective January 2020

https://en.wikipedia.org/wiki/Phase-out_of_incandescent_ligh...