Showing signs of compromise, the White House signaled on Sunday that talks to reopen the federal government could produce a deal in which President Donald Trump moves away from his demand that a proposed barrier along the southern border be a concrete wall.
The possible concession, which comes days after Trump had floated a barrier of steel instead of a concrete wall, came even as a top official warned that the shutdown, now in its third week, could "drag on a lot longer."
Trump, speaking to reporters outside the White House on Sunday, repeated his threat that if he is

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