[MamaTexan]

Moody said the Texas Constitution permits the governor to order other members of the executive branch to adopt rules like this one.

What the Constitution does not give the Governor is the authority to practice medicine.

Since a vaccination is a MEDICAL procedure, Governor Perry is practicing medicine without a license.

[MeanWestTexan]

"Since a vaccination is a MEDICAL procedure, Governor Perry is practicing medicine without a license."

The authority is in the Education Code. Same authority that requires all the other vaccinations (measles, mumps, rubella, tetanus) for school kids.