Biden announces sweeping action to curb illegal migration

Summary

1. US President Joe Biden has announced a sweeping new executive action aimed at curbing migrant arrivals at the US-Mexico border
2. It will stop migrants who cross unlawfully from receiving asylum, but only take effect when the southern border has been "overwhelmed"
3. The Biden Administration says the action makes it easier for immigration officers to remove people who are in the US illegally
4. The White House says the action will pause when the number of migrants crossing the border slows to a safe and manageable level
5. Immigration is one of the key voter issues ahead of November's presidential election, and both Democrats and Republicans are seeking to prove their credentials on the topic
6. Migrant arrivals have dropped this year - though experts believe the trend is not likely to be sustainable