WATCH: Dem scolds Homeland Security chief to ‘calm down’ after hearing derails over alleged ‘pattern’

A Senate Appropriations Committee hearing was disrupted by a heated exchange between Sen. Chris Van Hollen and Homeland Security Secretary Markwayne Mullin over allegations of a 'pattern' of abuse in DHS immigration enforcement. Van Hollen cited recent DHS-involved shootings and demanded evidence sharing with Minnesota authorities, while Mullin denied a pattern exists, arguing three incidents out of 1900 daily are not significant. Sen. Chris Murphy also criticized DHS spending and court violations.