It may help to understand who is “an illegal”. The media and right wing demonization leads us to expect a dark skinned person sneaking across the border, maybe carrying drugs, and otherwise becoming a criminal.

However

• lots of legitimate citizens and visitors have all different skin colors and ethnicity
• we make extensive use of documented migratory workers and other temporary visitors, especially in farm work and construction
• most “illegals” were in the country legitimately, but overstayed their documentation. This is a civil infraction
• many “illegals” are refugees from persecution and violence. This has usually been encouraged for humanitarian reasons.
• even today, many of the rest are desperate people trying to find a better life. Many of these are hard working contributing members of society.

Also remember that

• undocumented aliens may have taxes withheld from their pay but can’t file taxes - effectively donate to the rest of us
• can not use social safety nets like Medicaid, food stamps, etc. they do not cost us anything
• can not vote and there is no significant history of them trying
• generally keep their heads down so they don’t attract attention - lower crime rate than the rest of us

While I also wish we had better controls on undocumented immigration, I recognize they’re people with constitutional rights, that are a net positive for our country, we need them to Maintain our population so it’s in our best interest to make the legal process easier and faster. We also need to face reality and not make living illegal: all kids deserve a good education, regardless, and stupid paperwork shouldn’t drive them underground. We shouldn’t be piling more crimes on them for simply living: that’s us being sociopaths

No one is left-leaning. You are or are not. Look past the lies people tell themselves so they can pretend to be decent.