Brian Williams on Concerns Terrorists Could Exploit Border: Will They Be Terrorists Brian Williams on Concerns Terrorists Could Exploit Border: Will They Be Terrorists as Effective as Jan. 6 Capitol Attackers? On Tuesdays broadcast of MSNBCs 11th Hour, host Brian Williams responded to concerns that terrorists could enter through the southern border by wondering, but will they be terrorists as effective as the ones we saw on 1/6 when they took our Capitol? After playing a clip of Sen. Lindsey Graham (R-SC) expressing concern that terrorists could enter through the border, Williams remarked, Yes, but will they be terrorists as effective as the ones we saw on 1/6 when they took our Capitol?