More than 200,000 migrants have taken a cash-and-flight offer to leave the US voluntarily, a win for the Trump administration's immigration push.

• The government pays people to leave, offering a cash bonus plus a free flight home.
• The bonus was raised over time, briefly hitting $3,000 during a short December window.
• Sign-up runs through an app that works even on cheap burner phones.
• About 132,000 people have already left, with another 70,000 lined up to go.
• Self-deportations are up sharply from earlier in the year.

Outlook: Expect the pay-to-leave program to keep expanding as the administration leans on it as a cheaper alternative to forced removals.