I could see Obama being impeached at some point if very restrict gun legislation is somehow implemented. But the Senate would never find him guilty. Party lines would closely be followed. Unless it was over violations of the 2nd amendment. Then there would be a few Democrats that would probably cross over. There's about 10 pretty pro-gun Senators, but even in that case though it'd be 10 votes short (assuming all Replublicans plus the 10 Democrats). Which means it's a pipe dream to think the Senate would find him guilty.
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