Congress on Monday accused Narendra Modi of violating a time-honoured principle of Indian foreign policy, saying he is in the US as India's prime minister and not as a star campaigner in the elections there.Modi should not take "a partisan position" on the host country's domestic politics, it said.Congress leader Anand Sharma said India and the US have a strategic partnership which is bipartisan and which the Congress party fully endorses."There is a time-honoured convention of India's foreign policy that when we engage with foreign governments or the Prime Minister and the President are on foreign soil, we do not take a partisan position on domestic electoral politics," he said."The PM should have honoured that. It should not be seen that India is taking positions or sides. And the Prime Minister using that platform to exhort and raise that slogan 'Ab ki baar Trump sarkar' was better avoided because we have engaged with the Republican administration, Democrats administration," he ...