Martin Heinrich

The provided news articles focus exclusively on Markwayne Mullin's nomination and confirmation as Secretary of Homeland Security. Martin Heinrich is not mentioned in either article. Therefore, it is impossible to provide a summary about Martin Heinrich based on the given information. The articles detail the Senate's process of advancing and ultimately confirming Mullin, a Republican senator from Oklahoma, to lead the Department of Homeland Security under President Trump. This is newsworthy because it represents a significant appointment within the administration and signals a continuation of Trump's policies on immigration and border security. The confirmation vote occurred largely along party lines, highlighting the political divisions surrounding the appointment.