The modern US economy is a service economy. Every single thing you buy at some point is serviced, manufactured, picked, etc by a below $15 an hour worker. The person milking the cow, harvesting the eggs, staffing the warehouse, taking your order, cooking your food, and the person answering the complaint line are all affected. Your food, tv service, cell service, retail purchases, bus rides, and most importantly childcare and cost of food will jump drastically.
If a nanny/pca requires $9-14 now.. its going to be $15-20 then. This entire market gets decimated for the middleclass. I as a middle class worker can no longer afford a nanny.
If milk cost $3 before, think $4 tomorrow.
If your cell bill was $80... think $90 tomorrow.
If your target/walmart bill was $250, think $300-320 tomorrow (product costs AND retailer margins will rise).
If your bus ride was $3, think $3.25-3.50 tomorrow.
If daycare was $200 a week, think $240 tomorrow.
The retired and disabled (fixed income) will be be particularly screwed. The minimum wage worker would see wages double, but costs rise like 20%. The middle class would simply see cists rise with no offset. The rich will hire less service roles (like landscapers, pool cleaners, etc).