Donald and Melania Trump launched new cryptocurrencies over the weekend. Some experts are advising investors to be cautious.

Awaiting Trump’s return to office, the cryptocurrency industry was thrilled by the president’s promises to provide clear-cut regulatory guidelines that would help the sector grow while easing the volatility it’s become notorious for.

As Trump is sworn back into office on Monday, $TRUMP topped the market cap, bringing along optimism for the cryptocurrency industry.