Culpability?

Anyone who encouraged the migrants to cross the border is in some way guilty.

 When Republican governors send 50 migrants to Martha’s Vineyard, it’s a humanitarian crisis. When 51 migrants who were encouraged to cross the border by Democrats die in the back of a truck, well, that’s a statistic.
https://thefederalist.com/2022/09/19/if-marthas-vineyard-tried-to-prove-it-cares-about-immigrants-it-failed-miserably/