From that page: "there is currently no law regarding key disclosure in the United States" (nor is there in plenty other countries).
This an area under very heavy active debate at the legal and political levels and that fact might change in a year. There have also been numerous cases where the lack of such law hasn't prevented agencies for requesting the decrypted data itself, in lieu of the keys. But it's not quite a done thing just yet. So if you oppose key disclosure, there are still plenty of chances to fight it at the political level in many countries.
This an area under very heavy active debate at the legal and political levels and that fact might change in a year. There have also been numerous cases where the lack of such law hasn't prevented agencies for requesting the decrypted data itself, in lieu of the keys. But it's not quite a done thing just yet. So if you oppose key disclosure, there are still plenty of chances to fight it at the political level in many countries.