Another new one for Hillary tonight, or at least new to me: "Clawbacks"

[BernieforPres2016]

Tonight she said she would go after companies like Johnson Controls who had received government assistance or subsidies then moved overseas and claw back the benefits they had received.

1. Is this a new position for her or have I just missed it?
2. Is there anything in U.S. law that supports this if those provisions weren't written as strings attached to the prior government assistance?

[metroins]

1. Depends

If the subsidies were tied to metrics that were quantifiable, then the government has rights to enforce those metrics or nullify the subsidies.

It depends on the contact terms and the metrics involved.