"the US rate of homicide by firearms was 3 per 100,000 people. This was exactly the same as that of Lichtenstein!!"

I've no idea about Lichtenstein but you do realise that the rate you mention is horrendous! And that is only firearm deaths! Scotland's rate for total murders is 1 per 54,123. Your own figure states than it is 1 per 33,333 in the States for firearms alone. Do you think that is good? Scotland's rate is also down about 30% from a decade or so ago!