The original question was why do people take issue with the US enforcing its immigration laws, but not with other countries enforcing theirs (when the laws are approximately the same).
Your point is that immigration laws don't sufficiently take into account an illegal migrant's economic status (i.e. make reasonable accommodations for those in poverty or desperate circumstances), which is a totally fair perspective.
But that doesn't affect OP's initial question/observation, since countries other than the US also apply their rules uniformly, which disproportionately affects the poor.
Your point is that immigration laws don't sufficiently take into account an illegal migrant's economic status (i.e. make reasonable accommodations for those in poverty or desperate circumstances), which is a totally fair perspective.
But that doesn't affect OP's initial question/observation, since countries other than the US also apply their rules uniformly, which disproportionately affects the poor.