French Finance Minister Bruno Le Maire said Libra posed financial risks, could be open to abuse, and threatens the monetary sovereignty of governments.

While sounding alarm bells he didn't spell out how he proposes to block it. Its going to be up to the EU, not France alone.

The BBC have a bit more if you are interested

Meanwhile BTC update:

French Finance Minister Bruno Le Maire said Libra posed financial risks, could be open to abuse, and threatens the monetary sovereignty of governments.