Immigration Local Efforts
Helping organizations doing direct work with immigrant justice and welcoming asylum seekers is the best way to show support. I recommend the following organizations who also do much to educate around the issues of migrations:
Hope Border Institute - networking with local, national, and international organizations to create systemic change.
Rio Grande Valley Humanitarian Respite Center (Catholic Charities - Sr. Norma Pimentel, Director) - direct work with welcoming asylum seekers.
Annunciation House - direct work with welcoming asylum seekers.
All three of the above organizations also need volunteers.
Also, the ACLU does work across protected populations.