

Firstly, as usual LFI’s vision pretty much stops at the French border. They claim it’s a viable and good idea to create a constitutional principle of non-regression, but they only propose adding it to the French Constitution, not to a European treaty.
Secondly, it doesn’t really matter why they want to end the primacy of European law. If the precedent is set, it will almost certainly end up being used for things they don’t want, in France and in other member states. It’s also likely to result in a diplomatic crisis and possibly to the breakup of the EU.
(which FI knows well as we have a bunch of deputies in Bruxelles)
The far right also has MEPs, it doesn’t make them knowledgeable either.



The EU treaties are de facto a federal constitution, even though consolidating them into a single document called the European Constitution failed (partly because of Mélenchon).
Constitutions can be stacked on top of each other, there doesn’t have to be only one.
No, it isn’t. What LFI is proposing would be like putting, in the Constitution of California or that of another state, a provision incompatible with the Constitution of the United States.