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Trump doubles down on threat to build 'North America Air Filter Barrier' between the US and Canada to block wildfire smoke
Trump threatens to build a 'North America Air Filter Barrier' between the US and Canada to block wildfire smoke. The proposal is described as a response to cross-border air quality concerns.
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- Trump doubles down on threat to build 'North America Air Filter Barrier' between the US and Canada to block wildfire smoke
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