Trump's executive order bans almost all citizens from Iran, Sudan, Syria, Iraq, Libya, Somalia and Yemen from entering the US for 90 days. The administration considers the first three to be sponsors of terrorism, while the last three are "countries of concern." It will spend the next 90 days assessing whether their governments are asking enough info from visa applicants to give the US enough background data to assess whether they pose a terrorism risk.

New York Daily News reported that green card and valid visa holders were already blocked from boarding flights to the US as soon as a few hours after the order was signed. Since the Google employees from those countries are definitely at risk of being blocked from flying back, the tech titan asked them to reach out to the company's security, travel, and immigration teams for assistance. "No one is really sure whether a green card holder from these seven countries can return to the US now," immigration lawyer Ava Benach told Bloomberg. "It's fairly clear that an H-1B visa holder can't."

Besides Pichai, Mark Zuckerberg also reacted to the immigration order, speaking out against "expanding the focus of law enforcement beyond people who are real threats." As for Google, a spokesperson said the company is concerned that the order "could impose restrictions on Googlers and their families" and that it could "create barriers to bringing great talent to the US." It promises to continue airing its views so that they reach the right leaders in Washington and elsewhere.