This maybe the weakest excuse by the dems....sure the border has never been 100 percent secure...but it has been more secure in the past, we also didn't have a President that openly encouraged surges at the border.No one has ever secured the border. You are asking what Biden isn't doing what no one did.
Stores have never been completely free of shoplifting, but that doesn't mean we don't still try to prevent people from stealing either.