In response to the COVID-19 virus, many US Consulates have closed for visa services and are not conducting interviews or issuing non-immigrant or immigrant visas. The press release from the US Consulate in India can be found here and from the US Consulate in Mexico here. This is a very fluid situation so please check with your Consulate if you have an appointment scheduled. It is expected that these closings will significantly disrupt the operations of many IT companies. Here is a nice summary article. In addition, many H-1b and L-1 workers may be stranded abroad unable to get new visas issued and return to their US based jobs.