<p>Does the US conduct any security checks on internationals proposing to enter US to study science and technology? Or monitor thereafter?</p>
<p>[Female</a> ‘terror’ scientist Aafia Siddiqui facing US court after extradition - Times Online](<a href=“The Times & The Sunday Times: breaking news & today's latest headlines”>The Times & The Sunday Times: breaking news & today's latest headlines)</p>
<p>"Ms Siddiqui lived in the US for several years with her first husband, Dr Amjad Khan, studying biology at the elite Massachusetts Institute of Technology (MIT) in Boston. US security officials are said to believe that she was a sleeper agent, whose scientific education allowed her to become one of the few women to gain access to the inner circles of al-Qaeda, with its biological and chemical weapons programme. "</p>