It's not another country's responsibility if your neighborhood, hometown, or home country is a mess, shouldn't these people be fighting the good fight in their neighborhoods, home towns, or home countries?
It's also quite a leap to say that of all the places in between where they are from and the US they cannot find a safe enough haven. No?
If things are so bad all along the way then why did they choose to endanger themselves and their children, or even just their children, by taking the trip?
In many countries along the way as well as in the US these people can also legally apply for asylum in many supposedly safe countries including the US, yet they choose to enter the US illegally. That's a conscious choice because they think they can flout the law, jump the line, score a better economic life, and get away with it at the expense of US citizens and legal immigrants.