Abramoff and Delay linked with - Margaret Thatcher??? Sealed & secret.

I came across this today, and the possibilities kind of blew my mind. Does have any extra information or background on this?

I'm wondering what specific US legislation may have been so beneficial to the UK, about this period? And may have also involved Texas - perhaps a trade agreement of some sort?

http://www.mirror.co.uk/...

A DOCUMENT linking Margaret Thatcher to a US corruption probe is so explosive civil servants have been asked to ensure it remains "sealed".

The 79-year-old former Premier is said to have met Congressman Tom DeLay in Britain while he was on a suspected favours-for-freebies scam....

..."Evidence is sought from her about that meeting and her involvement in the alleged deception and violation of US criminal laws."

..."We have been asked by the US to keep this request 'sealed', which we take to mean as confidential as possible. This has been relayed to the Crown Office and Metropolitan Police.

Thoughts?