That's missing from Art 1, Section 8 in my copy of the Constitution.
How did we make it as a country for over a century without those laws?
Fraud covers sellers lying. It's already illegal.
See the photo above. That's what well intentioned legislation leads to.
/johnny
One hell of a lot of detail is missing from the Constitution on most any subject you can name.
Like I said, you're talking nonsense and requiring sellers to disclose information to buyers is a legitimate role of government.