>> As just one example, court rooms still have people swear on Christian bibles. I believe it has recently become optional.
You watch too much TV. Most courts do not have you swear "on" anything, you simple raise your hand "Swear or affirm under the pains and penalties of perjury you will tell the truth" some do not even add the "under the pains and penalties of perjury"
if there are any courts in the US still using a Bible they are in the EXTREME minority.
>There are also many government buildings that fund the creation and installation of religious statues and bible verses on plaques in their halls
Pretty sure that is also not true... Governments have allowed the installation of such things but they are often funded by private groups. I would love a citation where the GOVERNMENT paid for out of tax payer money a religious installations is say they last 20 years.. (paid for, not approved)
>>effectively enforced such as prison review boards giving credence to someone that has become a Born Again Christian when considering parole.
Citation...
Parole Boards often require the offender to Admit guilt and ask for forgiveness, this has being interpreted by extreme anti-religious groups as them "requiring people to become born again Christians"