Meme coins have evolved from internet jokes into multi-billion dollar assets, attracting everyone from casual investors to major financial institutions and the sitting U.S. President. Once playful parodies,

The launch of the Trump token, which hit a $15 billion valuation, rides the trend and raises questions. Axios reporter Brady Dale explains what a meme coin is and what owners can actually do with them.

Trump's crypto tokens are raising ethical and geopolitical concerns--and are worrying even Trump's staunchest pro-crypto supporters