You are ignoring the point that having tough local laws aren't enough when your neighboring states have laws that completely neuter them. Hawaii doesn't have that problem, their tough gun laws cannot be neutered by states like Indiana.
And what is the agenda here exactly? A Trump supporter went on a mass killing spree and your side's only solution is to arm more of them.
Where the guns used in Chicago actually came from - Washington Post
https://www.washingtonpost.com/news...-the-guns-used-in-chicago-actually-came-from/
Nov 7, 2017 - Many of the guns recovered in Chicago — a fifth of them — were purchased in Indiana, which abuts the city's eastern border. An additional 9 percent of the guns recovered in the city came from Mississippi and Wisconsin.
This pattern is not unique to Chicago. States with tougher gun laws often discover that places with more lax legislation are the source of many of the firearms used in crimes.
Last year, the attorney general of New York issued a report about the flow of guns into his state. Attorney General Eric Schneiderman identified what he called the “iron pipeline,” a string of East Coast states through which guns flowed into the state.
In New York City, for example, nearly 9 in 10 firearms come from out of state.
A lot of popular assault weapons come from Russia. It seems like we need Globally enforced gun laws for your idea of differing states (or countries) to maybe hold water.
A true Trump supporter loves his country, is critical of our politicians, and sees foreign influence ruining what our country is about.
You are trying to use a so-called “Trump supporter” to represent that all Trump supporters are bad. Isn’t that how racism works. You pick out a person of a particular race and say they are all that way. “You just can trust a ..., do I never hire them”, etc.