Because they're an advocacy group for a change in US policy. Obviously their communications are going to be about that. I honestly find this criticism utterly bizarre; it's like arguing that the suffragettes keep solely making pamphlets about opposition to voting law. "You might imagine that a group dedicated to improving society might have some pamphlets about other ways of improving society!"
Illegal border crossings as traditionally understood (taking a swim and a hike over dangerous territory), are in the big scheme of things a pretty tiny portion of undocumented arrivals -- when illegal crossings altogether are the
minority source of undocumented immigrants. Visa overstays are still by far the biggest source, and even looking only at illegal crossings, almost all occur at ports of entry rather than overland and are trafficked into the US rather than finding their own way. Which is why I do, and
still say, corporate regulation and labor rights reform are the most effective venue for solving for the US's immigration issues.
Not to be blunt about this, but how many more rental trucks full of dead Latin-Americans do we have to find in Wal-Mart parking lots before we figure out how undocumented immigration actually works? I'd wager most "illegals" end up stranded in the desert because they were dumped by coyotes, who caught wind of CBP or ICE patrols and decided to save their own ass. CBP/ICE ain't exactly lining up around the block to take on coyotes and cartels, who are the people they
ought to be targeting if the federal government wants a long-term solution for this; they seem to be
much happier justifying their own paychecks hitting soft targets like people who are already in this country minding their own damn business.
And no, liberals certainly
do not get a pass on that, especially after that whole "coyote" debacle during the presidential debates. The wall was stupid, sure -- but so are the fences, motion detectors, patrols, and the like, because illegal immigration
does not occur that way and has not for a long, long time.