Fortune 500 firms are being urged to rip up the resumes of Trump immigration aides linked to policies that led to the separation of illegal immigrant children from their parents at the U.S.-Mexico border.

“Many of you spoke out against this barbaric policy. However strong the opposition, your words are meaningless unless they are backed up with resolute action,” said a letter from a group called Restore Public Trust promoting its "Trump Administration Separation" campaign.

“We call on you to make it clear that you will not hire for employment, contract for consulting, or seat on your boards, anyone involved in the development or implementation of the Trump administration’s family separation immigration policy,” added the letter signed by several other liberal groups including the Southern Poverty Law Center, Moms Rising, American Bridge, and Allied Progress.

The group names several officials including White House press secretary Sarah Sanders, chief immigration aide Stephen Miller, and Homeland Security Secretary Kirstjen Nielsen.

The letter shown below also mentions former Attorney General Jeff Sessions and his former spokeswoman, Sarah Isgur Flores, now at CNN.

The groups are making their case in a letter to CEOs and in a New York Times ad set to publish Sunday, shown above.

It also wants a hiring boycott on Trump immigration aides in lobbying shops and any think tank or political action committee companies work with.

The separation of children was controversial, and targeted parents for arrest and deportation who had criminal records. It had been part of immigration policy for years, though the administration stepped it up in hopes it would scare families from trying to enter the U.S. After a wave of negative stories and comments, the administration ended it.

Still, the groups want those who have worked on immigration policy punished.

“There are some lines that simply cannot be crossed,” said the CEO letter.

“It’s been one year since the Trump administration announced their ‘zero tolerance’ immigration policy and ripped innocent children from the arms of their families seeking refuge at our border,” said Karl Frisch, spokesperson for Restore Public Trust. “Unfortunately, this shameful episode in our nation’s history still hasn’t ended. And while the American people are still demanding answers about this heinous policy, many of the individuals involved in crafting, implementing, and defending it have yet to be held accountable. Some of these individuals have already left the administration, others will in the future. Regardless of when they leave, they shouldn’t be allowed to seek refuge in America’s boardrooms or corner offices.”