This is a subject that has been the subject of intense debate between late-night comedians and Donald Trump's many online critics: why, under certain circumstances, does the President of the United States sometimes appear … orange?

Now, Trump himself has found an answer – and nobody expected it. The problem, apparently, is that of energy-efficient light bulbs.

Speaking to an audience of Republican lawmakers in Baltimore on Thursday night, Trump delivered a disjointed speech in which he criticized his recent plans to weaken green light bulb regulations.

"The electric bulb" the president started. "People said: what about the light bulb? I said: here is the story. And I watched it. The bulb we are forced to use! No. 1, for me, the most important, the light is useless. I always look orange. And you too! The light is the worst.

But it was not the end. Trump complained that the energy-efficient bulb costs far more than his incandescent predecessor and that, according to him, it should be treated as a "dangerous waste" if it breaks.

Energy-efficient bulbs such as halogen incandescent bulbs, compact fluorescent lamps (CFLs) and light-emitting diodes (LEDs) consume on average 25 to 80% less energy than traditional incandescent bulbs and can last up to 25 times longer.

But that was not enough for Trump. He continued, "What are we doing? It is a dangerous waste, but it is much more expensive and, frankly, the light is not so good. We will sell them, but we will also sell incandescent bulbs. People are very happy. It's amazing. "