"legally controversial" is a correct and usable phrase in written English.
It can be used to describe an issue, topic, or situation that is subject to debate or disagreement within the legal field. Here is an example: "The decision to legalize recreational marijuana has been legally controversial, with strong opinions on both sides of the argument."
Military detention was once legally controversial but now is not.
Ethics aside, covert monitoring technology is also legally controversial.
The order is likely to be legally controversial, says Frederick Hess, director of education-policy studies at the American Enterprise Institute in Washington DC.
There is no graver responsibility for any prime minister than the commitment of British forces to violent action, especially when that action is politically (and possibly even legally) controversial.
But ensuring real impartial justice is even more important, given the extraordinary events surrounding both Saddam Hussein's murderous rule and the legally controversial way in which it was ended with a unilateral policy of regime change on the part of the United States.
On Wednesday, Britain doubled down on that approach with a legally controversial move, saying it was revoking the citizenship of Shamima Begum, a teenager who four years ago fled the country to join the Islamic State at the age of 15. Britain wasn't the only country raising questions this week over the citizenship of one of its former residents.
And neither policy has been legally or politically controversial.
The potential chilling effect on other judges when they come to determine legally or politically controversial cases is obvious, and a serious threat to the rule of law".
He said the threat of terrorism now, like the threat of communism then, was used to justify extreme measures that "later become controversial legally, morally and politically".
Mr Cash acknowledged that seeking powers to repeal existing legislation would be "legally complex and controversial" but said claims about the supremacy of EU law needed to be challenged.
The reality is that Secure Communities had become legally and politically controversial, and led to the enactment by numerous jurisdictions of laws, ordinances, directives and policies that limit their cooperation with ICE in our efforts to promote public safety.
