Congressional Oversight:
~ DHS has been plaque with a massive number of oversight committees, a legacy from the department being gobbled together from 22 agencies.

Border security:
~ The border can be secured through the correct appropriations process, enforcement, and the application of the law.

Cyber security:
~ has emerged as an issue of vital national security, the top priority is to train, recruit, and maintain a qualified, motivated, dependable workforce

My issues ( in more detail )