The Senate appeared to reach a broad consensus late Thursday with a decisive 67-29 vote on Sen. Dianne Feinstein’s (D-Calif.) amendment to prevent the military detention of U.S. citizens.

But the controversial issue of military detention remains as muddy as ever — despite the agreement from lawmakers on Feinstein’s provision.

Sens. John McCain (R-Ariz.), Lindsey Graham (R-S.C.) and Carl Levin (D-Mich.) — all vocal supporters of the right for the military to detain terror suspects on U.S. soil — made the surprising move Thursday to support Feinstein’s amendment.

The lawmakers only did so, however, after declaring that Feinstein’s amendment did the opposite of what she claimed.