In a rare speech focused on immigration, President Biden announced new changes in border enforcement policies. The new plan incorporates several proposals that would make it easier for people to enter the country legally. Other changes will restrict asylum for people crossing the border illegally. Although the plan will unnecessarily create winners and losers, Biden’s new vision could—on net—improve the migration process for most affected immigrants and convert most illegal immigration to legal immigration, creating a more safe and orderly system. But the success of the new vision will...