At the start of the covid-19 pandemic, Trump invoked the president's authority under something called title 42 to close both the Canadian and Mexican borders. 
Both borders have slowly opened up over time, but Mexican border is not as open as it was before the pandemic started.
Because both Republicans and Democrats agree that the emergency is basically over, Biden does not have the authority to continue closing the Mexican border this way.
Which is too bad, because law and order on our side of the border is obviously much better than it was. 
And while the bleeding hearts still say there's a humanitarian crisis on the other side, they seem to agree that it's not any worse than it was before the pandemic.
Congress should be acting, to give Biden new authority to both slow down and regularize the flow of refugees.

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