However, Sunday's detentions were the first since contractors lost their immunity under a joint U.S.-Iraqi agreement.
Removing their immunity would favour British firms, which are generally less twitchy about operating under other countries' laws.
However, their immunity to privatisation, enshrined in state laws, is a big obstacle.
And Congress has swiftly passed another law allowing the judge to question senators without a prior vote to lift their immunity from prosecution.
The Oxford University team was reportedly "dismayed" earlier this year when some of the former prostitutes appeared to lose their immunity and contracted HIV.
Politicians regularly use their immunity to block inquiries involving their allies.
In mid-May the government announced plans to enact a law to criminalise any action that "harms national unity" which the parliamentarians took as a direct threat to their immunity.
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They think, for instance, that deputies threatened with imprisonment two were recently sentenced to jail terms, in apparent violation of their immunity should in fact, as well as in theory, be able to take physical refuge in the parliament building.
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The anti-corruption campaign has coincided with the sentencing to prison, in apparent violation of their parliamentary immunity, of three reformist deputies.
This power is especially significant in view of the fact that Putin stripped governors of their criminal immunity when he removed them from the Federation Council.
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Providing another potential stick for Pena Nieto, Congress stripped lawmakers and other public servants of their longstanding immunity from prosecution, leaving only the president with total legal protection.
Their perceived immunity from default is increasingly untenable.
The entire story was brought to light because three radical post-Zionist and anti-Zionist members of Knesset abused their parliamentary immunity to announce on live television what the military censor had, for reasons of national security placed a gag order on.
Since the pertussis vaccine's protection can wear off with time, a booster shot is recommended for adolescents at their 11-year-old checkup visit, as well as for adults who care for young infants, in order to protect from whooping cough until the babies have their own immunity.
It was only after their loss of immunity that Putin acquired the power to temporarily remove and replace those under investigation.
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There is no international law that gives officials immunity inside their home countries.
And would you consider leaving any troops in Afghanistan beyond that date without an immunity agreement for their actions?
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So Democrats can block immunity, and their leader is opposed to it.
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When the two airlines announced their deal, they requested immunity from antitrust laws in America in order to co-operate closely on fares and so on.
Mr Bush recently waived restrictions on military aid to 21 countries, and curbs on economic aid to a further 14, despite their refusal to sign bilateral immunity deals.
The summary cites a number of people -- whose names are blacked out in the report -- as having offered statements through their attorneys and having sought immunity from prosecution.
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But five of the Law Lords in the second panel devote much of their judgments not to the immunity issue, the core of the case, but to an issue barely raised before.
As a result, their lawyers are threatening to challenge Minustah's immunity in the Haitian courts if the UN does not address their claims.
He discovered that infants given doses of an anti-malarial drug called Fansidar along with their regular childhood vaccinations often acquired immunity to malaria.
Instead, the teens were granted immunity to testify, and their accounts helped incriminate the defendants.
The generals want their state of emergency legitimised, and immunity from prosecution.
The worst offenders demanding bribes, on the other hand, do so with impunity, hiding behind sovereign immunity and, often, their own, complicit local law enforcement.
They conceded the U.S. doesn't abide by the international conventions but has its own laws granting limited immunity to figures such as their client who are in the U.S. on legitimate business for international organizations.
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