[AnimalMuppet]

How about this: Either the government lets you evict them, or the government pays their rent. But if the government prohibits evictions of non-paying tenants, and doesn't itself pay, how is that not "private property be[ing] taken for public use, without just compensation", and therefore a violation of the Fifth Amendment?

[josephcsible]

That definitely fixes the problem for the landlords, but I don't really like the idea of my tax dollars subsidizing deadbeats. What if the government paid the rent for now, but then came after the renters for it later with the same force that the IRS does?

[AnimalMuppet]

It fixes the problem with the Constitution. The rest is "merely" a matter of the normal government functions of deciding who to take money from and what to spend it on, which will get sorted out in the normal political way.