The upper house is where the few braincells in our government are kept.
They know that they can't make it into law as that would force them to enforce it afterwards.
A strongly worded letter is all Xamar is capable of ATM and they know it.
I've a feeling exactly that would take place all this bolstering is for show to vote strength. A bite won't take place as something else would happen and they will forget about it so they don't show weakness when failing to enforce