Looking at counties in US-Mexico border to see how Biden did in 2020 compared to Clinton in 2016.

Here goes:

CALIFORNIA
San Diego: Biden +23 (Clinton +20)
Imperial: Biden +41 (Clinton + 42)

ARIZONA
Yuma: Biden -6 (Clinton -1)
Pima: Biden +20 (Clinton +14)
Santa Cruz: Biden +36 (Clinton +47)
Cochise: Biden -17 (Clinton -21)

NEW MEXICO
Hidalgo: Biden -15 (Clinton -7)
Luna: Biden -10 (Clinton -4)
Doña Ana: Biden +18 (Clinton +18)
Otero: Biden -26 (Clinton -29)
Eddy: Biden -52 (Clinton -41)
Lea: Biden -60 (Clinton -48)

TEXAS (Batch 1)
El Paso: Biden +34 (Clinton +43)
Culberson: Biden +3 (Clinton +23)
Jeff Davis: Biden -22 (Clinton -23)
Presidio: Biden +33 (Clinton +37)
Brewster: Biden -4 (Clinton -5)
Terrell: Biden -47 (Clinton -34)
Val Verde: Biden -10 (Clinton +8)

Texas (Batch 2)
Kinney: Biden -44 (Clinton -33)
Maverick: Biden +9 (Clinton +56)
Webb: Biden +23 (Clinton +52)
Zapata: Biden -5 (Clinton +33)
Starr: Biden +6 (Clinton +60)
Hidalgo: Biden +17 (Clinton +41)
Cameron: Biden +13 (Clinton +33)

These Texas numbers, yo.