Two Massachusetts Democrats sent a letter to various regulators asking them to open an investigation into President Trump’s and first lady Melania Trump’s recently launched meme coins.

The price of $Trump has dropped to around $17, resulting in cumulative losses of $2 billion for several investors.

President Trump’s meme coin went on a bumpy ride over the long weekend — before steadying Tuesday after the Securities and Exchange Commission announced it would launch a “crypto task force.” ...