system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Federal Ruling on Affordable Care Act

What does this means for the American People?  For Taxes? For People covered under ACA?
gpt
The ruling was that funds were distributed as reimbursements/subsidies without being approved by congress. One of the fundamental checks and balances inherent in the US govt. is that congress controls the power to spend, so spending unappropriated funds without congressional approval is unconstitutional. These funds were primarily used to subsidize low income insurance holders by lowering deductibles and out of pocket costs. 
 
If this ruling stands as-is, those subsidies will not be available under the current law. The alternatives to this going forward would be either for congress to pass legislation approving the funds for that use or some modified version of the original scheme, or that insurance premiums will go up further for everyone/most people. 
 
The insurance companies are still obligated legally to provide the subsidies so nothing will happen immediately for those benefiting from the payouts, but going forward things will be different. The government was reimbursing the insurers for the subsidies but insurers will not be receiving that reimbursement any longer. This means that insurers will face losses due to being legally obligated to provide the subsidy. It is likely that more insurers will opt out of participating in the exchanges due to uncertainty and financial losses from participating and that more healthy/low risk insurance customers will opt out of coverage due to increased cost (shifting actuarial assumptions and driving up overall risk and cost of coverage).
 
It is very unlikely that this is the last we will see of this ruling, because it creates a significant issue for the overall function of the ACA. As to what will happen going forward, that is anyone's guess, but there will definitely be more fighting over this ruling.