Paris attacks: French MPs back stripping of citizenship
French MPs have narrowly approved the first stage of a proposal to enable people convicted of terrorism offences to be stripped of their nationality.
The measure is the most controversial change to the constitution drawn up after the 13 November attacks in Paris.
France's National Assembly is due to vote on Wednesday on all the measures proposed by the government.
Emergency powers currently in force would be given a new status under the constitution.
The proposal to strip citizenship from offenders was carried by a margin of 162 to 148, after the government removed a reference to dual nationals born in France. That had aroused considerable opposition and prompted the resignation of Justice Minister Christiane Taubira.
If the overall package is approved in Wednesday's formal session, it will then go to the Senate. It will then require approval from a joint session of parliament by a three-fifths majority, a process likely to take weeks.
President Francois Hollande outlined the changes in the aftermath of the gun and bomb attacks by Islamist militants who targeted a concert hall, a major stadium, restaurants and bars - leaving 130 people dead and hundreds more wounded.
But elements have been vociferously opposed by leading figures, including members of his own Socialist party.
The BBC's Hugh Schofield in Paris
With the country united in grief and anxiety, the president said it was important to take tough action in what he called a "war" against terrorism.
Three months on, his vision of constitutional reform has run into the reality of partisan politics.
On the left - even within his own Socialist party - there is opposition to the proposal to strip terrorists of their French citizenship.
In practice, these critics say, that could only apply to bi-nationals - people with a second nationality - which would make two tiers of citizenship.
On the right there are voices saying the reforms are a meaningless diversion, giving the impression of government action against terrorism, where there is none in reality.
Ms Taubira stood down a fortnight ago, citing a "major political disagreement" with the government over its plans for removing citizenship from those convicted of terror offences.
Even without a reference to bi-nationals, opponents say in effect it singles out dual-nationality French Muslims, as under international law, governments cannot make citizens stateless.
Extension of powers
On Monday, lawmakers voted in favour of the other key measure in the package, the move to enshrine the state of emergency in the constitution, giving the security forces greater powers.
Under the terms of the state of emergency, police are allowed to raid homes and hold people under house arrest.
It expires on 26 February but the government wants the powers extended.
In Wednesday's vote, under Article 1 of the constitutional reform proposals, MPs will have to approve a state of emergency beyond 12 days. This rule is already observed, but including it in the constitution is intended to protect it from legal challenges.
Government whips say they are confident of a majority in the lower house on Wednesday - but even if they are correct there is still a long parliamentary battle ahead.