President TrumpDonald John TrumpMarine unit in Florida reportedly pushing to hold annual ball at Trump property Giuliani clashes with CNN's Cuomo, calls him a 'sellout' and the 'enemy' Giuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it MORE quipped at a Monday evening rally that his administration’s rollback of energy efficiency standards for lightbulbs was due to the fact that he looked better under less efficient bulbs.

"I'm not a vain person. ... But I look better under an incandescent light than these crazy lights that are beaming down," Trump told a crowd in Fayetteville, N.C., on Monday.

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The administration finalized the reversal of Obama-era efficiency standards last week, rolling back the rules for about half of lightbulbs. Critics of the move say it will hasten climate change by requiring the U.S. to produce more energy to power the less efficient bulbs.

Sen. Bernie SandersBernie SandersOvernight Health Care — Presented by Partnership for America's Health Care Future — Pelosi unveils signature plan to lower drug prices | Trump says it's 'great to see' plan | Progressives pushing for changes Krystal Ball calls on Sanders to follow Yang's lead on war on drugs Buttigieg calls Warren 'evasive' on Medicare for all MORE (I-Vt.), whose home state is one of several that have passed state laws to keep the Obama-era standards in place, pledged to restore them at the federal level as president last week at a climate change town hall hosted by CNN.

“If you can get electricity from a lightbulb that utilizes one-tenth of the power that an old incandescent lightbulb uses, of course you're going to do that. Of course, you're going to encourage that technology,” Sanders said.