That would violate the 1st amendment.
My argument: airwaves and telephony network emit radiation that the public is exposed to. Frequencies are allocated by the government for communication purposes for the public good.
If certain frequencies are harmful, they are regulated to protect public health. I would say that disinformation, lies and deception, are even more harmful to public health. I would propose that in order to access broadcasting frequencies, those entities doing so should be required to guarantee the veracity and factual content of heir publications or risk having their licenses revoked. You still have freedom of speech but no access to pollute the airwaves with lies.
“Are there any actual laws on the books that govern or regulate journalistic integrity?”
There are libel and slander laws. The media has, in the past, received a fair amount of leniency in these matters, but they’re not immune.