There are multiple forms and documents required to apply, many of which are difficult to navigate and necessitate the assistance of an attorney. Visa officers are trained to identify potential indicators of a fake acceptance letter during the visa application process.The Sheriff's Office offers two ways of submitting open records request, online submission or a written request in person. If it is a cop, they will do it on their letter head, via an email, or in person, which is preferred. They do it via the change of command. They need a "police clearance letter" from Nigeria. You need to contact the Nigerian Embassy in the US and request a police clearance letter. The Texas Commission on Law Enforcement (TCOLE) welcomes law enforcement officers from other areas considering a career move to Texas.