Given the skew of poverty in the USA to black and latin populations you might want to consider hiring several full time people on to the team and leadership who

Given the skew of poverty in the USA to black and latin populations you might want to consider hiring several full time people on to the team and leadership who can bring the understanding that can only come from being part of those communities. Otherwise this can be attacked as being dominated by rich white people. While the intent is clear the execution needs to match the targeted end users. You may also want to consider the efffect of health care. In other UBI environments free healthcare is a given. In this experiment healthcare costs can easily cripple the impact of the regular income. Control for that by providing health care insurance, or make it two experiments by doing some with and some without. If that doesn’t work maybe consider doing this experiment in another country.