 Existing legal Indian citizens who come from pre-independence migration to India are also not included under this definition.Foreigners who enter or stay in India without a valid visa are officially designated as illegal immigrants; they can be arrested and deported since they pose a risk to the country.Since the country is not a signatory to the 1951 Refugee Convention, the United Nations principles of non-refoulement and impediment to expulsion do not apply in India.