USA: what are the consequences of Trump’s reduced immigration policy?

Immigration is one of the hottest issues in the USA: border security, policies to expel “illegal” immigrants, the economic and social impacts of migrations are some of the aspects. The official line mostly justifies Trump’s restrictive migratory policy in terms of national security goals, but an aspect that draws less attention is the demographic consequences. How has the migratory balance changed? And what are the effects on population distribution in the USA and at state level?