Plaid Cymru's social security spokesperson, Hywel Williams MP, has welcomed the findings of the UN social housing rapporteur, Raquel Rolnik, who has spent the past few weeks travelling around the UK to assess the impact of the bedroom tax on human rights.
Mr Williams and his Plaid Cymru colleagues have led the campaign in Westminster against the UK Government's toxic policy, while the Labour Party has failed time and again to commit to reversing it should they gain power after the 2015 election.
Mr Williams has always maintained that the bedroom tax is deeply flawed in practice and in principle, and said he welcomed the UN's findings which give further weight to the arguments against this policy - this time on a legal level.
"The bedroom tax is one of the most toxic policies any UK Government has implemented for decades. It targets vulnerable people - many of them disabled - and will inevitably lead to spiralling debt and homelessness. People can apply to a hardship fund, but this is cash limited and time limited so the very poorest have to compete against each other for help.
"I was pleased to see the UN recognising this fact and sending an official to explore the impact on the human rights of those affected. However, I was disappointed by the lack of a visit to a Welsh city, despite Wales being affected disproportionately due to a high number of benefits claimants.
"Ms Rolnik has confirmed what Plaid Cymru has feared all along - that the bedroom tax is having a "shocking" impact on people already struggling with everyday life - and it is very welcome to hear that she recommends abolishing this policy immediately.
"She also pointed to the UK Government's failure to assess the impact on lives when it took this decision. This sadly shows that the Coalition had little interest in estimating the human cost of this policy - a callous oversight which has already proven disastrous.
"The UK is a signatory to the International Covenant on Economic, Social and Cultural Rights. This means that Ms Rolnik's findings should carry weight within the British justice system and prompt the Government to abandon this most inhumane of policies.
"I will be writing to the Prime Minister immediately to gain assurance that he will take heed of international legislation and act immediately to mitigate the impact of the bedroom tax."