"This is what a loophole looks like," says veteran who does not qualify for help under new burn pit law

A leading veterans advocate who is now sick from toxic exposure including after overseas deployments in the wake of the 9/11 attacks, will not benefit from the recently passed PACT Act, according to medical records reviewed by CBS News.

The legislation's title is an acronym for "Promise to Address Comprehensive Toxics," and it is supposed to expand health care benefits for veterans who developed illnesses because of their exposure to toxic substances from burn pits on U.S. military bases during their service. 

"This is what a loophole looks like," Army veteran Mark Jackson said from his hospital bed in Florida, after recent emergency surgery for a rare infection.