"We are weighing the individual provisions of the law...As long as it is debated by experts, it does not make sense to talk about it since it could yet be changed," Interior Ministry State Secretary Boštjan Šefic said on Monday.

The government was expected to debate the bill at its regular session last week but Prime Minister Miro Cerar deferred the adoption saying that additional examination was needed.

Šefic said it was unclear whether the bill could be adopted this week or later. "It is taking a bit longer since we want the law to be consistent - to achieve the goals while taking into account our international commitments and the Constitution."

The details of the new legislation have not been revealed beyond Interior Minister Vesna Györkös Žnidar saying a month ago that the law would simplify the return of migrants who do not meet conditions or have entered the country illegally.

The government has argued the law is necessary due to the possibility of Slovenia facing a new refugee wave of the kind that it witnessed in late-2015 and early-2016, when almost half a million migrants crossed the country en route to Western Europe.

Šefic said the situation was stable at the moment, with the number of illegal border crossings "manageable". "Our colleagues in all countries on the migration route are doing their job," he said.