Seems like India does this well and they are the world's largest democracy and much poorer than the average American. Poverty is not an excuse for government incompetence (or even malice).
Seems like you aren't in the US so maybe you don't know the history. Basically the US has a very long history of white supremacists protecting their own power and wealth at the expense of non-white people through disenfranchisement. This continues today. I'm arguing from the point of view that this is bad and should not be a basis for policy.
It's not that it's impossible for some practical reason, the problem is that the republican party (which still holds a huge amount of power at the federal, state, and local level even when they don't hold the presidency) actively wants to deprive people of their voting privilege because they suspect those people might decide to vote against them.
In America, when voting license legislation is passed, the government shutdown DMVs making it difficult and expensive to get a voting license.
You're comparing apples to oranges.