While it is essential that the government do its best to avoid being hit with high tariffs, it should also keep in mind that any deal with the US is subject to the vagaries of its leadership and changes in the political and legal climate. Judicial challenges to various tariff decisions taken by US President Donald Trump are already evident. It is also not clear whether the US Congress, although dominated by his party, would support whatever Mr Trump finally decides — and, technically, trade deals are the province of the legislature and not the executive. The powers to assent might be retrieved by the legislature at any time. And, of course, there is Mr Trump’s impulsiveness, which too must be taken into account. There can be little doubt that any deal with India, if the popular response among his base is not entirely favourable, might well be unilaterally revoked at any time — regardless of the legal basis for such a revocation.