The Senate Democrat who negotiated a failed immigration deal with Republicans is urging his party to embrace Vice President Kamala Harris’s role on the border in the face of an onslaught of GOP attacks.

Sen. Chris Murphy (D-CT), like other Democrats, has cried foul over the “border czar” moniker given to Harris as Republicans attempt to tie her to President Joe Biden’s record on the issue. The president tasked Harris with investigating the root causes of illegal immigration in the early days of his administration, but the assignment quickly became a stumbling block for Harris as the number of crossings soared to record levels.