Secretary of State Hillary Clinton has previously talked about her health fears, after suffering from a blood clot behind her right knee in 1998.
She told The New York Daily News doctors found a clot in her leg whilst she was working on her Democratic party colleague Chuck Schumer's campaign bid for New York Senate. She said the scare was the most "significant" she had experienced:
"That was scary because you have to treat it immediately - you don't want to take the risk that it will break loose and travel to your brain, or your heart or your lungs. That was the most significant health scare I've ever had."
More top news
The 'Let Our Kids Be Kids' campaign wants parents to keep their children off school saying they are "over-tested and over-worked".
Nicky Morgan is expected to defend the proposal when she fields questions at the National Association of Head Teachers' annual conference.
Phone charges in the European Union will drop by about 75 per cent from today as part of an interim cap ahead of a full ban next year.