With months-long consulate and embassy delays being reported, the two tech companies say staying put in the U.S. right now could prevent workers from getting stranded in their home countries.

The U.S. reportedly plans to overhaul the country’s childhood vaccine schedule. The move, first reported by CNN, would change how many vaccines to protect against various diseases children get and when they receive those immunizations.

TikTok CEO Shou Chew told employees of the social media app Thursday that its owner, China’s ByteDance, has signed binding agreements to create a joint venture for the app in the United States, as agreed to in a deal with the Trump administration.