As noted in Participatory Budgeting in Brazil (.PDF)
Participatory budgeting (PB) began more than a decade ago in Porto Alegre, one of the most populated cities in South Brazil. PB is a process through which citizens present their demands and priorities for civic improvement, and influence through discussions and negotiations the budget allocations made by their municipalities. Since 1989, budget allocations for public welfare works in Porto Alegre have been made only after the recommendations of public delegates and approval by the city council.
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The primary empowering aspect of participatory budgeting is the participation of low- income segments of the population and their influence on the decision-making process. PB has encouraged the active participation of various segments of civil society in a process that earlier involved only the elected representatives. While allocating resources, PB gives priority to the needs of the poor, who constitute a majority of the population. According to the official estimate, about 40,000 citizens of Porto Alegre participated in public meetings to allocate about half the city budget in 1999. Hence, the citizens held a considerable responsibility for governing the city of 1.3 million inhabitants.
With the success of PB in Porto Alegre it has stemmed to (.PDF)
Over 300 Brazilian municipalities adopted PB between 1989 and 2004, and cities in at least 30 other countries also have adopted PB
It has even reached the likes of the United Kingdom regarding a the Welsh town of Colwyn Bay with their participatory budgeting programme.
- Water Crisis in Flint, Michigan and reportedly 32 other cities
- Homelessness in Los Angeles City, California
- Industrialisation in Detroit, Michigan
- Police Spending in Chicago, Illinois
Would it be possible for US cities to adopt participatory budgeting under the current system?
Note: An answer would reflect any of the cities above referencing the aforementioned issues in regards to state policies or you could use the all the cities if state policies don't reflect upon the answer. I'm just querying whether any US cities could adopt PB under the current system.