The latest civilian death at the hands of Federal Immigration Officers in the US could hurt the Republican party in midterm elections. 

Donald Trump is kicking off the campaign in Iowa - a state neighbouring Minnesota, where ICE agents have now shot two protesters dead.

US correspondent Dan Mitchinson says many Republicans and Trump allies are questioning the immigration agents' tactics. 

He says Democrats aren't the only ones concerned.

"And a lot of this, I'm sure, has to do with the mid-terms that are coming up this year. Democrats are going to take any opportunity they can to turn something like this into a political soundbite." 

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