First, worries regarding the huge influx of migrants from low-income countries do not seem warranted: the share of immigrant from low-income countries (as percentage of the total immigrant stock residing in the U.S.) is rather small (around three percent) and has remained steady over the period 2001-2017, both among the recent arrivals and the broader immigrant population.
On the other hand, there is a definite downward trend in the share of immigrants who originate from high-income OECD countries, as well as a similar downward trend for Mexicans, with the latter being particularly prominent among recent arrivals. There is a corresponding increase in the number of migrants from lower- and upper middle-income countries, especially from India and China.