Sample No Objection and Leave Sanction Letter for a US Tourist Visa. A no objection letter is a document that states that a person is permitted to travel to the United States.The purpose of the No Objection Certificate or Letter for visa is to show your strong intent to return back to your home country. The letter will include a declaration that your employer has granted you permission to leave the country without objection for a short business trip. I need a "No Objection Letter" to marry an Indian Citizen. These forms come from the US Citizenship and Immigration Services (USCIS) in the Department of Homeland Security. In case of an error, please fill a new online application form.