It's in the news. The Trump administration is examining and vowing to curb the rampant mis-use of the H1B visa program that was flooding the US job market with cheap labor from India. In ISD we have more H1B holders (associates) than you think. Then consider the number of contractors that are here with H1B visas and you can see where this is all leading.
With the threat of H1B visa reform looming, the strategy is to reduce tech jobs at ISD (layoffs) and shift work to Bangalore and to more offshore contracting. ISD leadership has no interest in keeping a US work force since everything can be done remotely.
In my 19 years at Walmart, I have never been so discouraged and felt so betrayed. I doubt there will more than a very minimal tech (ISD) presence in Bentonville by the end of 2019.