Letter: European tax union is bound to follow from a single currency

Sir: John Redwood (article, 17 January) says: "If you share a currency with another country you have to share many other things as well." But look at the United States. Firms and people happily move from one US state to another to take advantage of better legal and tax conditions. One can be in a federal union with a common currency and still have a lot of control over revenue-raising and spending.

G WILLIAMS

Brussels