Is my mother's (she's Latina) anger towards illegal immigrants right?

Even though my mother was once an immigrant, she has no pity for illegal ones that received assistance programs, come illegal, never learned the language and waste resources.

While I was born in Maine, my mom is from El Salvador. She described the exhausting and long process of waiting for her work visa and then how expensive it was going from resident (including learning English; she needed that to be a citizen) to US citizen. She gets very upset at the illegals and keeps saying it's not fair, how no one helped her, she had to pay it all and it was a long process.

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7 mo
I've seen this happening; the least tolerant towards illegals aren't just the natural born US citizens but the naturalized (then immigrants) citizens that cost them their time and money.
Is my mother's (she's Latina) anger towards illegal immigrants right?
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