Their intervention comes as the EU institutions gear up for tough negotiations over the future shape and size of the bloc's regional policy after 2013, when the current funding period comes to an end.
Stakeholders are jostling for position ahead of the likely unveiling of a blueprint for the next funding period (2014-2020) by Regional Policy Commissioner Johannes Hahn by the end of June.
Members of the European Parliament's regional policy (REGI) committee recently backed plans drawn up by the European Commission to divide Europe's regions into three groups, according to their level of wealth, by creating a new category between the poorest and most prosperous areas.
MEPs want to make sure that the Commission addresses the needs of regions whose level of GDP per person falls between 75% and 90% of the EU average by introducing the category of 'intermediate regions'.
The idea – first proposed by the EU executive in its Fifth Report on economic, social and territorial cohesion, published at the end of last year – would replace the 'phasing-out' and 'phasing-in' mechanisms which are part of the current system for deciding how much money each region can receive from the EU's structural funds.
Official EU statistics show that some 50 regions, with a combined 72 million inhabitants (14% of the total EU population), could qualify for inclusion in the new intermediate category.
'Don't cut budget'
But French regional leaders – in Brussels this week to defend the current system and warn EU policymakers that creating the new category risked slashing aid for their regions – cautioned that cohesion funding must continue to support all Europe's regions if the continent is to continue to recover from recession.
"We're not budget eaters, but we want to maintain funding at current levels," Jean-Yves Le Drian, vice-president of the Association of French Regions, told journalists ahead of a meeting with key EU decision-makers on Tuesday (31 March).
"Keep the European Social Fund, treat all regions equally and move towards increasing EU cohesion funding under the 'Europe 2020' strategy," Le Drian urged policymakers.
"Our biggest worries are that funding for cohesion policy will be reduced and certain regions will not be recognised," said Le Drian, who is also president of Brittany.
"We are in a crisis and reducing cohesion funding would be the wrong thing to do," added Sandrine Rousseau, vice-president of France's Nord-Pas de Calais region.
Others warned that reducing EU regional funding is "exactly the opposite of what we should be doing" at a time when Euroscepticism is growing throughout the bloc.
"Populism is mounting across EU member states and it is regional funding that brings Europe closer to its citizens," said Jean-Claude Gayssot, vice-president of French region Languedoc-Roussillon.
'Justice and solidarity' at stake
He was echoed by Gérard Vandenbroucke, vice-president of Limousin, who warned that "justice and solidarity" are at stake in the upcoming reform. "Without that, we will see more Euroscepticism and lower turnout in EU elections," he predicted.
Danuta Hübner MEP (European People's Party), who chairs the Parliament's REGI committee, told EurActiv that she supports the idea of a new intermediate category because this would ensure that all regions facing similar challenges are treated on an equal basis.
She said it was not fair that under the current system, regions with identical levels of wealth, as measured by GDP per person, can receive very different levels of support from the European Regional Development Fund (ERDF) and other EU funds.
Under the 'phasing-out' and 'phasing-in' system, regions that were previously considered poor are entitled to extra financial support for several years after their economic situation has improved, to ensure a kind of 'soft landing'.
Currently, a former 'convergence' region is eligible to receive up to seven or eight times as much money as another region of the same size, with exactly the same level of wealth.
Not everyone in the REGI committee agrees with Hübner, however. German centre-right MEP Markus Pieper (EPP), recently slammed colleagues who voted in favour of asking the Commission to develop proposals for a new category.
Pieper told EurActiv that the introduction of a new 'intermediate' category could cost up to €20 billion over a seven-year period. He likened the idea to the sleeping car of an overnight train, warning that regions would feel "too comfortable" with such a system in place.
Indeed, with divisions also reported between Commission President José Manuel Barroso – who is pressing ahead with 'intermediate regions' despite the misgivings of some of his colleagues – the fight over the future of EU cohesion policy appears to be only just beginning.