After a small bounce right after it was passed, the gap widens again.
See the chart below:
You can see a list of the different polls here.
HT: Drudge Report
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Trump Pledges Troops on the Border Until Wall Is Built
President Donald Trump: “I’ve been speaking with General Mattis — we’re going to be doing things militarily. Until we can have a wall and proper security, we’re going to be guarding our border with the military. That’s a big step. We really haven’t done that before — certainly not very much before.”