Which is one way us workers are affected when job s are outsourced to less developed countries?

"The main negative effect of outsourcing is it increases U.S. unemployment. The 14 million outsourced jobs are almost double the 7.5 million unemployed Americans. If all those jobs returned, it would be enough to also hire the 5.7 million who are working part-time but would prefer full-time positions."

Source:
https://www.thebalance.com/how-outsourcing-jobs-affects-the-u-s-economy-3306279