Who makes America great? Immigrants do!!! Immigrants from Mexico, El Salvador, and African nations such as Nigeria are all performing better than the US-born, shows a new study. "The typical explanation offered for this kind of immigrant achievement is some inherent quality resulting from cultural differences, such as a strong work ethic or placing a value on education. But the working paper offers a more tangible explanation for the mobility gap: Immigrants tend to settle where there is more economic opportunity and take jobs that are below their true skill level." This is true for a lot of immigrants I know, including myself.

https://www.vox.com/policy-and-politics/2019/11/1/20942642/study-paper-american-dream-economic-mobility-immigrant-income-boustan-abramitzky-jacome-perez?fbclid=IwAR0i2_eMkJp2-SFDHIiKmlu-3OxjJGQrfLEwMOn9CU3PbPLE18b0Wdb1Xrg