Mr. La Pierre has proposed putting an armed guard/policeman in every school rather than addressing availability of (semi) automatic weapons.
Let's make common cause with Mr. La Pierre.
There are 90,000 school in the US. So we will need about 95,000 guards(given some schools are very large or people get sick etc).
Each of these fine people will need to be paid. Let's guess that each of them will be paid about $60,000 per year. That means that we are looking at $5-6billion per year to implement his idea.
How to pay for this?
I read that approximately 2 billion rounds of ammunition are sold in the US each year.
$6b/2B=$3/round of ammunition.
We could levy a user fee on every round of ammunition sold in the US to pay for Mr. La Pierre's idea.
Thus, this would be the NRA fee.
Or we could ban (semi) automatic weapons and restore some sanity to the situation.
Either of these solutions would dramatically reduce the carnage over time.