Happi Legal Cannabis Disposable 2G THC vaping pens are legal in most states, 2023, United States Stock Photo Alamy Cannabis conundrum: Legal isn't always clean, nor illicit dirty Los Angeles Times THC A Guide: What It Is, How It's Made, & Legality Eighty Six Vapes containing THC and other hemp derived cannabinoids like Delta 8 will become illegal to sell in Texas on Sept. 1 under a law passed earlier this year. Senate Bill 2024, while narrower than The law does not specifically ban the possession of THC vape pens, but those who sell them face up to a year in jail and a $4,000 penalty.