Ndume said his colleagues moved against him mainly because of his support for Buhari's anti-corruption war and for backing Magu's confirmation.
Ndume was suspended for six months after he demanded that the Senate President Bukola Saraki be investigated for allegedly importing a vehicle with fake documents.
He also called for the investigation of Senator Dino Melaye for allegedly forging his Ahmadu Bello University (ABU) degree.
Saraki and Melaye both denied the allegations and were later cleared by the senate committee on ethics and privileges.
Speaking to his constituents on Sunday, April 16, Ndume said he would rather be isolated in the Senate than betray Nigerians.
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The lawmaker said his colleagues are against him because of his support for President Muhammadu Buhari's anti-corruption war and for backing the confirmation of Ibrahim Magu as the substantive chairman of the Financial Crimes Commission (EFCC).
"As far I am concerned, I wronged no one in the senate and I am not regretting my loyalty and support for President Buhari’s fight against corruption as well as all forms of financial crimes," he said.
The Emir of Shani, Mamman Mailafiya, urged Saraki to talk his colleagues into recalling Ndume.