There is a danger in these post-modern days, when Western culture is under attack from within by the left, that the impact of importing people whose culture is inferior (by any measure) will be underrated, that ethnic politics and enclaves shape the broader democracy
According to CNN back in 2012, the Latino population in the US as a proportion of the whole will increase to 29% in 2050. It is now 17%. As to voters, according to Pew Research, published in January, 2016, 11.3% of eligible voters in the US election are Latino. This matters in some states more than others because of the uneven spread of the Latino population. In California, for example, it is 28%, in New Mexico 40%, in Texas 28%, in Florida 18% and in Nevada 17%. Usually around two-thirds vote Democrat in presidential elections.