The presentation of the petition is the latest example of employee activism at large tech companies against the Trump administration’s “zero tolerance” policy on immigration, which had resulted in children being separated from their migrant parents earlier this year. The White House has backed down from the policy, but the administration has struggled in recent weeks to reunite children with their families.

Workers at several Silicon Valley companies were up in arms over the issue, but Microsoft came under particular scrutiny from its employees because the company has a contract for processing data and artificial intelligence capabilities with ICE. The agency had been separating migrant parents and their children at the border with Mexico. Last month, Microsoft employees circulated a letter that called on their employer to cancel all contracts with ICE, among other measures.

In response, Microsoft said last month that to the best of its knowledge, its products and services were not being used by federal agencies to separate children from their families at the border. It added that it was “dismayed” by the Trump administration’s immigration policy and urged that it be changed.