Just days ahead of his return to the White House, President Trump and his wife, Melania, launched a pair of meme coins that have skyrocketed in value and earned them billions of dollars, at least on paper.

Melania Trump launched a meme coin on the eve of her husband’s inauguration — causing his own new cryptocurrency to briefly tank amid a buying frenzy. The incoming first lady dropped news of the cryptocurrency — “$MELANIA” — on Sunday night — just days after her husband, President-elect Donald Trump, revealed his own newly created $TRUMP coin.