A key plank of the Government's anti-terror laws has been criticised by MPs and peers.
The Joint Committee on Human Rights accused ministers of failing to give Parliament a proper chance to debate the use of controversial control orders.
Legislation which allows the orders have to be renewed every year and the committee claimed ministers were not giving enough chance for discussion.
The parliamentarians also said more should be done to prosecute people rather than imposing the orders, which place terror suspects under a form of house arrest.
Committee chairman Andrew Dismore said: "We know there is a genuine dilemma: what to do about people who pose a serious threat but cannot be deported or prosecuted.
"The only right answer is to find ways of prosecuting them, but we fear that the Government is not as committed to prosecution as it professes to be, and we are concerned that imposing a control order relieves the pressure on the police and the Home Office to bring a criminal prosecution."
The High Court and the Court of Appeal have quashed seven control orders on the grounds that they amounted to deprivations of liberty.
The committee said Government could do much more to overcome the main obstacles to criminal prosecution, mainly by intercepting material such as phone taps to be used in court.
Last month the Government's independent reviewer of terror laws, Lord Carlile of Berriew QC, called on ministers to draw up an "exit strategy" from the control orders regime.
