Why Did EFCC Refuse To Investigate The Following People?

Why did Buahri EFCC refused to investigate the following people at least to charge the people who alleged them as liar for perjury?
Politicians that should be charged for corruption.

Atiku Abubakar: Reputed to have fleeced the economy of billions in the privatization exercise. His former boss OBJ has consistently told Nigerians that Atiku is "Olee". Today, Atiku remains the presidents right hand man. His stealing has been written-off at the expense of poor Nigerian masses. 

Rotimi Amaechi: The Rivers Stage investigation panel confirmed that Rotimi Amaechi stole over N84 Billion from the state treasury. The case was reported to EFCC, but Buahri EFCC refused to investigate at least to charge the people who alleged as liar for perjury. Yet Buhari is making corrupt Amaechi his minister.

Chief Obong Attah: This former Akwa-Ibom governor was accused of fleecing the State to the tune of $5.3 Billion paid to ECONET for which the UK government has declared him wanted. Additionally, the case of over N200M paid for non-existent air port is still largely not investigated. Obong Attah has found a friend in Buhari and as such not longer a thief.

Abacha and family: Buhari served under Abacha regime as Chair of the Petroleum Trust Fund (EFT). This fund was reputed to have "helped"many Buhari friends to loot the Nigerian economy. Though, Buahri has not been directly indicted Abacha family have. In the latest World bank report on Abacha loot, it was reported that the amount was 'too much' for them to trace. Yet Buahri told us that Abacha was not corrupt".

Timipriye Sylva: The former Bayelsa governor who now want to return to state house was accused and being tried for stealing a whooping N22Billion from the state. The case was on by EFCC before Buhari was sworn in as the president. Thereafter, the cases were abandoned by EFCC and Sylva is now running for governorship under Buhari's apc. As a friend of Buhari and member of Buhari's transition team, Sylva theft were written-off. http://www.premiumtimesng.com/news/top-news/184918-efcc-files-fresh-corruption-case-against-ex-governor-sylva.html

Abubakar Audu: Abubakar Audu's case of stealing N11 Billion from one of the poorest states in Nigeria is a pathetic story. No one knows the state of the case as of today. The funny twist to this case was that the State apc chairman told the people of Kogi to re-elect Audu Abubakar so that he can "return" the N11Billion stolen from them. Audu Abubakar as apc flag bearer in Kogi State remains Buhari's friend. Who is fooling who?

Malam El-Rufai: The governor if Kaduna State was formerly Federal Capital Territory minister under PDP. El-Rufai was alleged to have allocated plots to himself and his wives and concubines and even female lover (corp member) was being paid N1million per month as allowance. latest was the N5Billion paid to his company for consultancy service to CBN under Sanusi for no work done. All these were not probed by Buhari, yet story has it that El-Rufai is infact the defacto Vice President of Nigeria. A friend of Buhari is no longer corrupt. 

Babatunde Fashola: The case against Fashola is know in public domain. He was reputed to have constructed a personal website with N78 Million in addition to having dug some two boreholes with N300 millions. Babatunde Fashola is a friend of Buhari and now a minister of Buhari's corruption fighting government. What an irony.

Fayemi: Amongst other corruption issues and plunging Ekiti state into an eternal debt, Fayemi was accused of making a bed for N40 million. All calls for EFCC to investigate this act of corruption was glossed over because Fayemi was the "organizer" of Buhari's winning primaries. He is now being appointed as a minister of FGN.

When men like this are moving freely with their agbadas raising, what is corruption fight all about then?