Show me in the Constitution where it states that a State cannot secede.
Not Comm Law rulings from a court, but actually in the Constitution, or even the USCode.
Show me in the Constitution where it states that a State cannot secede.
14th Amendment
No state shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States....
Any Texas claim of secession would terminate the privileges and immunities of all citizens of the United States resident in Texas.
Texas Constitution 1868
Article IBill of Rights
That the heresies of nullification and secession, which brought the country to grief, may be eliminated from future political discussion....