[arp242]

> If people want to change that policy, they'll need to amend the constitution.

Herein lies the problem: it's just too hard to amend the constitution. Here in Ireland it's just a referendum. Some pass, some don't. It's a living document that changes (slowly) over time.

Heller was a 5/4 decision and a number of lower courts ruled different from the Supreme Court. It's not as clear-cut as you're making it out. The US constitution is vague enough that in many cases you can give several different reasonable interpretations. Endless discussion over what a comma written 250 years ago may or may not mean is quite frankly deeply and profoundly idiotic way of governing a country.