Face The Nation: Sending Migrants To Sanctuary Cities & Mass Grave Discovered In Ukraine

President Biden is criticizing Republican governors who have sent buses and planes of migrants to so-called sanctuary cities in the Northeast in an attempt to force Democratic leaders to deal with the influx of asylum seekers. We're also learning new reports about mass graves uncovered by Ukrainian forces in a city reclaimed from Russian forces.

The moderator of CBS's face the nation Margaret Brennan joined News On 6 at 4 from D.C. to break down these stories.