Hot barrage trims changes to a US law (5,2,4,4)

I believe the answer is:

right to bear arms

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'a us law' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'hot barrage trims changes' is the wordplay.
'changes' indicates an anagram.
'hot'+'barrage'+'trims'='hotbarragetrims'
'hotbarragetrims' with letters rearranged gives 'RIGHT TO BEAR ARMS'.

'to' is the link.

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I've seen this clue in the Sydney Morning Herald.

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