Tennessee's lax gun laws under scrutiny after Nashville shooting.

Despite a fatal school shooting in Nashville, Tennessee is unlikely to strengthen its gun laws as Republican leaders have steadily relaxed firearms regulations. A federal judge recently cleared the way to drop the minimum age for Tennesseans to carry handguns publicly without a permit to 18, just two years after a new law set the age at 21. Republican lawmakers have introduced bills that would make it easier to arm teachers and allow college students to carry weapons on campus, while Democratic-led efforts to strengthen gun safety measures have faltered.