- Texas governor wants constitutional convention to pass nine new amendments
- Plan would bolster state power at expense of federal government
- Constitutional scholar calls plan a legal "black hole"
- Marco Rubio has offered similar proposal on trail and in recent op-ed
(CNN)Texas Gov. Greg Abbott on Friday revealed his plans for a "convention of the states," the first in more than 200 years, as part of a larger effort to reshape the U.S. Constitution and expand states' rights.