The amendment Anna Paulina Luna crowed about on Twitter today would appear to give no quarter to bad foreign actors in the mining sector.

A closer look reveals that it’s actually a stripped-down version of a much more robust and far-reaching amendment introduced by Representative Raul Grijalva earlier in the day, which Republicans strenuously opposed. Notably, this narrower version cedes significant ground, giving mining companies a pass on environmental damage and destruction of cultural heritage sites.

Here are a few highlights, just to give the flavor of the discussion.