In December, Cuba nearly surpassed Mexico as the number-one country of origin of migrants encountered at the US-Mexico border.

The largest increases in encountered migrants from October-December:

• Ecuador 130%
• China 120%
• Russia (now 9th) 104%
• “Other” 102%
• Nicaragua 69%

The largest decreases:

• Venezuela -63%
• Mexico -27%
• Haiti -24%

Here is the underlying data table going back to October 2019, using CBP’s dataset.