First off no one said LAST YEAR, I said they originally attached it to DACA which was 2017 do your own google search on it.(no bill gets a stand alone vote)
Hey maybe you are right but I can't find it. I did my own search as you instructed me but this is the only thing I could find from 2017 on the original Butch Lewis Act. I couldn't find anything that democrats wanted a DACA attached to it. It says the dems had asked for a stand alone vote. However I do recall jimmy posting something a while back about DACA and 2018 bi-partisan pension committee that failed to come up with a plan. If that is what you are referring to I would be interested in reading about it.
https://www.planadviser.com/congressional-democrats-continue-push-butch-lewis-act/Congressional Democrats working on labor and retirement issues convened Wednesday morning to call on their Republican majority colleagues to consider immediate stand-alone passage of legislation, known as the Butch Lewis Act, which would, Democrats argued, “ensure the pensions that American union workers have earned over a lifetime of work are protected into the future.”