There is already irrefutable proof, dumb PAP cocksuckers like you refuse to see it.
case 1.
How can the Prime Minister's own law firm Lee and Lee be the default legal firm for all HDB conveyancing contracts and given business for hundreds of thousands of new and resale flats? No tender, no bidding, no contracts put out in the open for all to see. This is not corruption?
case 2.
How can PeeM and his father, and mother and other relatives receive discounts on Nassim jade luxury condos by HPL above and beyond anything available to the rest of the public? How come CPIB don't even investigate this?
case 3.
How can Teh Cheang Wan, accused of taking large bribes not be arrested and under police custody and was allowed to "commit suicide" instead of as, you say "get these corrupted politicians jailed"
case 4
How can the Finance Minister appoint his own wife to run a Pte Ltd investment company 100% owned by his own Ministry when she has no qualifications whatsoever? The wife now earns obscene amounts of money running this company, and her compensation is not revealed. this is not corruption?
got many other cases I care not to mention But shits like you have blinders on and refuse to see it. that is all i can say.