SIR - Before MPs resume their debate on the Treaty of Lisbon they may care to look at its Declaration 17, which claims that EU treaties and laws have primacy' over the laws passed by their own Parliament.

Then they should look at Parliament's official website, which states that it is: "the supreme legal authority in the UK".

From which it seems a logical conclusion that the laws it passes must have supremacy' in the UK - but how can that be so, if EU treaties and laws have primacy'? Unless there is a subtle distinction between supremacy', and primacy', which is perfectly clear to the fine minds in the House of Commons, even if it would elude that of the man on the Clapham omnibus.

Perhaps Labour MP Mr Foster, who has voted in favour of this treaty to date on the initial readings, might care to inform his electorate exactly how his agile mind can perform the necessary gymnastics to define this difference?

Because if he can't, then his position is not only untenable as an MP, but the law must investigate whether voting for such a treaty is a treasonable offence and he should be tried accordingly. Along with, of course, all the other MPs blindly following their Fabian whips.

NICK CHANCE, Severn Stoke.