France's National leader Front Marine Le Pen is due to meet with other far-right leaders on Wednesday in an attempt to forge a unified right-wing bloc in the European parliament, the Guardian reported.

Even before the meeting, however, Le Pen ruled out joining forces with a number of neo-fascist parties, including Golden Dawn in Greece, Jobbik in Hungary and Bulgaria's Ataka.

Nor did she envisage meeting newly-elected German MEP Udo Voigt of the neo-Nazi NPD, Le Pen said.

Since becoming leader of the NF, Le Pen has endeavored to shake off the anti-Semitic and Holocaust-denying reputation that the party had under her father, Jean-Marie Le Pen, who once dismissed the Holocaust as a "detail."

Le Pen needs the support of at least 25 MEPs from seven different countries to establish a formal political group in the European parliament.

"There are a whole group of movements that, in my opinion, are interested in taking part in a large political force whose aim would be to prevent any new move towards European federalism," she told a press conference on Tuesday morning.

Newly-empowered, after receiving 25 percent of the European election vote in France, Le Pen is setting out to unite Europe's disparate nationalist parties into an anti-EU caucus at the European Parliament.

Such a bloc could stall the EU's decades-long march toward a United States of Europe, according to the Wall Street Journal. It could also pose a risk to EU policies which some economists consider important to restoring growth.

One likely target could be the ongoing negotiations with the United States to forge a vast free market known as the Transatlantic Trade Treaty – an effort that Le Pen calls "pure folly."

In an interview at National Front headquarters just outside Paris this week, Le Pen likened the EU to the old USSR. "It can't be improved. We need to let it crumble and build after it a Europe of free and sovereign nations," she said.