European Union foreign policy chief Federica Mogherini has called on Albania to pass a key judicial reform, considering it a decisive step for the country as it strives for EU membership.

The main opposition Democratic Party is resisting the approval of a final draft package that should be passed by the end of the month to convince Brussels to authorize membership negotiations and also is key to fighting corruption at all levels, especially the judiciary.

A statement Sunday from Mogherini's press office said that it is "essential for the country's next step towards integration with the EU."

Earlier this week, U.S. Assistant Secretary of State Victoria Nuland told Democrats' leader Lulzim Basha that the package was "a top priority in U.S.-Albanian relations and for Albania's progress toward the EU."