imelda ulloa's husband now hasi, asthma. e doctor when we visited. >> his doctor said that it was because of the pollution. >> reporter: omar ulloa is worried about his dad. >> to see him struggling just to even get a breath of air is heartbreaking and... it's a really scary thing, that i can possibly lose my dad over thihe e.p.a.'s new clean trucks plan will force the industry to use cleaner vehicles to cut nitrogen dioxide emissions by up to 60% by 2045. >> we have a death sentence. we have nosc >> reporter: jesse marquez runs an environmental justice organization fighting for zero-emissions trucks. he says communities of color often lack the political power to force change. >> that's why we've had to organize politically, to change some of these laws and to support emerging technologies. >> reporter: local elected officials tell cbs news they're trying to fix the truck problem. imelda ulloa hopes someone will listen. >> can you hear me? please, i'm here. i'm hispanic people, but i'm here. >> reporter: because she just want

imelda ulloa's husband now has asthma. he was at the doctor when we visited. >> his doctor said that it was because of the pollution. >> reporter: omar ulloa is worried about his dad. >> to see him struggling just to even get a breath of air is heartbreaking and -- it's a really scary thing that i can possibly lose my dad over this. >> reporter: the epa's new clean trucks plan will force the industry to use cleaner vehicles to cut nitrogen dioxide emissions by up to 60% by 2045. >> we have a death sentence. we have no escape. >> reporter: jesse marquez runs an environmental justice organization fighting for zero emissions trucks. he says communities of color often lack the political power to force change. >> that's why we've had to organize politically, to change some of these laws and to support emerging technologies. >> reporter: local elected officials tell cbs news they're trying to fix the truck problem. imelda ulloa hopes someone will listen. >> can you hear me? please, i'm here. i'm hispanic people, but i'm here. >>