As Amer­i­cans say the immi­gra­tion cri­sis is the num­ber one issue fac­ing the coun­try, both Pres­i­dent Joe Biden and for­mer Pres­i­dent Don­ald Trump will vis­it Texas bor­der towns on Thurs­day in duel­ing appear­ances at the border.