"France has to protect itself from ISIL and has to take some tough decisions like deprivation of the citizenship of the French jihadists, eviction of their families, allow no return to France to jihadists, and if they do, we have to bring them to justice and restore death penalty for terrorism," the lawmaker said.
Capital punishment was abolished in France in 1981.
The IS is an extremist militant group that has occupied large areas of Iraq and Syria. The militants are known for numerous human rights atrocities, as well as for recruiting foreign fighters mainly through the social networks.
According to various estimates, 20,000 to 30,000 foreign fighters have joined ISIL ranks. The International Centre for the Study of Radicalisation has reported that some 1,200 are French nationals, the largest number among EU members.
The deepening migration crisis in France originates from the country’s colonial past, Jean-Luc Schaffhauser said.
"For France, it [immigration] is the old problem because we haven’t well managed the end of colonialism and the development of post-colonial countries that were… more advanced when we administrated them," Schaffhauser said.
Migrants from the African countries are of particular concern for France, the lawmaker added.
"As long as we won’t create a real and solid development program in Africa, this [immigration crisis] will continue," he stressed.
The EU member countries have been confronted with a large-scale migrant crisis recently with tens of thousands of refugees risking a journey through the Mediterranean to flee violence in North Africa and the Middle East.
The situation in the northern French port of Calais has been in the spotlight in recent weeks with crowds of undocumented migrants attempting to enter the United Kingdom through the Channel Tunnel.
