what is texas department of corrections j id nigerian guards have to go back to nigeria

It sounds like you’re asking whether Nigerian prison guards working for the Texas Department of Criminal Justice have to go back to Nigeria. Based on the available reporting, not automatically : many foreign-born TDCJ workers have historically been hired legally, and the key issue is immigration status or work authorization, not nationality alone.

What the reporting says

Texas has long recruited or employed foreign-born correctional officers, including Nigerians, to fill staffing shortages. Recent reporting also describes at least one Nigerian-born TDCJ guard being arrested in Texas, but that arrest does not by itself mean all Nigerian guards must leave the U.S.. Another report says the majority of TDCJ’s foreign workers come from Nigeria, which suggests this is a staffing pattern rather than a deportation order.

What decides whether someone must leave

A guard would only have to return to Nigeria if their immigration status changed, a visa expired, or they were ordered removed by immigration authorities. A criminal arrest alone is not the same thing as deportation, although it can put employment and immigration status at risk. So the answer is: no, not just because they are Nigerian or work for TDCJ.

If your question is about one specific person

If you mean the Nigerian-born guard in the recent Texas story, the report says he was booked into Walker County Jail and his job was in jeopardy, but it does not say he was deported or told to return to Nigeria. If you mean a broader rumor about “Nigerian guards,” there is no evidence in the sources here of a mass requirement for them to leave.

TL;DR: Nigerian guards at TDCJ do not automatically have to go back to Nigeria; only immigration or legal status issues would determine that.