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Sen. Mullin Leaves Senate: GOP Faces Cross-Chamber Challenges

3/12/2026

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Summary

Story summary

Sen. Markwayne Mullin will depart the Senate to lead the Department of Homeland Security, raising questions about who will fill his House liaison role.
Republicans say Mullin uniquely connected the two chambers, making cross-chamber coordination harder.
Potential successors, including Rep. Kevin Hern, face a tough task matching Mullin's networking and influence.
Republican lawmakers worry inflation and oil prices could affect the party's electoral prospects amid Iran tensions.

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Story summary

Sen. Markwayne Mullin will depart the Senate to lead the Department of Homeland Security, raising questions about who will fill his House liaison role.
Republicans say Mullin uniquely connected the two chambers, making cross-chamber coordination harder.
Potential successors, including Rep. Kevin Hern, face a tough task matching Mullin's networking and influence.
Republican lawmakers worry inflation and oil prices could affect the party's electoral prospects amid Iran tensions.