For example on WIKI
“FAIR’s policy rhetoric and analysis have often been claimed by critics to be nativist, inflammatory, and partisan.”
Nativist being defined as “In politics, Nativism is the fear that certain new immigrants will inject alien political, economic or cultural values and behaviors that threaten the prevailing norms and values. It usually involves restrictions on immigrants and sometimes includes policies that favor the interests of established inhabitants (i.e. “natives”) over those of immigrants. The term has most often been used in the United States, but the concept is also relevant in other countries, especially ones which have experienced intensive immigration and associated rapid societal change.”
So, if you prefer nativist, to Xenophobic then fine. But in order for the groups to be racist, they have to be anti races, not anti all immigrants no matter their race, creed, color or ethicity. I don’t doubt that many racists are also nativists, but I’d like a cite with a major USA anti-immigration group that says “Ok, come on in- if you’re white. But stay out if you’re brown, black or yellow.”
FAIR, which is likely the most widely known anti-immigration group, seems to be scrupulous in it’s opposition to immigration, especially illegal immigration. It’s section on suggestion for stopping illegal immigration has suggestions that work equally on both borders, not just our Southern one.
FAIR sez “there should be no favoritism toward or discrimination against any person on the basis of race, color, or creed; that all admissions of immigrants come within a single, stable ceiling which is periodically reviewed on the basis of reasoned, explicit population goals for the United States;”
FAIR also mentions Canadian illegal immigrants, too.
So, sorry- not (much) based upon racism, so much as xenophobia and nativism.