While I understand your position, there are some fed LEOs who need to be armed. The US Border Patrol and Customs come to mind as their duties were enshrined in the constitution.
Why say the Interior Department, Educations Department, the IRS and USFS have swat teams bogles the mind.
In practice it’s posturing because of lack of GOP control over the Senate & Presidency. If it threatened to become reality, you’d see who really supports it.
DHS is a monster they likely played a big role in J6 subordinate parts like Border Patrol need their independence from DHS again.
The head of DHS needs “the national razor” aka “La Guillotine”.