The reputation of the Home Office, and by extension, the UK Government, is being tarnished by the inability of the UK Border Agency (UKBA) to fulfil its basic functions.
The foreign national prisoner issue and the asylum backlog were scandals which first broke in 2006, six years ago.
UKBA appears unable to focus on its key task of tracking and removing illegal immigrants, overstayers or bogus students from the country.
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The singer had been tweeting in support of migrants when she was bombarded with abusive messages.
Ministers are reportedly considering plans in a bid to lower inward migration.
In a tweet on Saturday, the US president didn't give a reason for his absence but said he wished"everyone well and have a great evening".