To their credit, the WaPo’s editors begin by admitting that we do, in fact, have a refugee crisis on our hands. They go one step further, admitting that the Obama administration was “flummoxed” by the unending flow of families and unaccompanied children trying to flee Central and South America and enter the United States, particularly in 2014. But they are dismissive of the one solution being put forward by the Trump administration which might actually make a difference. We’ve had a “safe third country” agreement with Canada since 2004. Under that plan, migrants are to apply for asylum in the...