TODAY | March 13, 2014
>> now to idaho where the governor has now signed a bill that will allow guns on college campuses. it's a controversial measure that's generated a lot of debate and an eye opening letter from one professor. here's nbc's joe fryar.
>> since many of my students are likely to be armed, i thought it would be a good idea to even the playing field .
>> reporter: at boise state , this dna expert is suddenly diving into politics, concerned about plans to allow guns on college campuses. he wrote a satirical letter published in the "new york times" and headlined by a shocking question.
>> when may i shoot a student?
>> newtown and columbine often come to mind. he writes about past encounters with disgruntled students.
>> i always assumed when they reached into their back pack, they were reaching for a pencil. but now that they will be packing heat, i would like legal instruction. he asked if i'm working out a long equation on the board, and several students try to correct me using their laser sights , am i allowed to fire a warning shot?
>> supporters say those with enhanced concealed carry permits have a right to protect themselves within campus borders.
>> i look at this more as an individual protection, not for the masses but for individuals.
>> the state representative says he more worried about every day criminals but school shootings concern him, too.
>> i wouldn't be able to live with myself knowing i watched something so horrible and heinous happen and people were murdered and i just had to lay down and hope i wasn't next.
>> reporter: the professor opened up the question for debate in class.
>> you are reacting to an attack, why not level the playing field .
>> people are going to carry whether you restrict them or not.
>> i have a conceal carry. i'm not sure whether it's appropriate on campus, i'm torn.
>> and the professor said he's just trying to generate opinions.
>> mission accomplished to open the dialogue, which is so important. i love seeing the students all have a different point of view to add to