Nate Cohn: “Congressional politics don’t usually play a role in presidential campaigns, but it’s easy to see how this could be an exception. If Republicans scuttle a bipartisan bill addressing the border, Mr. Biden will have a plausible path to blame Republicans — and by extension Mr. Trump — on the issue that ought to be best for Republicans.
”“In the hands of a deft campaign, Republicans could be made to pay a political cost for blocking the deal.”