I misse d parts of POTUS talking. What and why did he have to compel 3M for?

3M supplies the rubber for the seals that go into the ventilators and that rubber is hard to come by.

GM put in a request for 600K seals that the rubber is supplied by 3M. The major supplier for those seals only had enough for 160K on hand.

GM was compelled through the "ACT" for ventilators. They relay on M for the rubber than makes the seals