[nradov]

Many states already have usury laws which limit interest rates but in practice that doesn't give labor any more power relative to capital. Lowering limits on interest rates would just result in capitalists ceasing lending to risky businesses.

A better solution would be to increase taxes on income from interest and capital, and use that funding for education and social services.

[dbingham]

It would have to be linked to a requirement that all businesses be formed as worker cooperatives, democratically run by their workers. That's what would give labor the power.

The usery laws are just about preventing banks from exercising undo power over those worker cooperatives at the formation stage.