How do immigrants affect the u. s economy

They affect the economy a few ways one way is that they well hire them instead of a u. s citician and they get put on welfare and and intrude on our land

Immigrants have always been vital assets to the U. S. economy and contribute greatly to the nation’s total economic output and tax revenue. In 2013, for example, immigrants added $1.6 trillion to total U. S. gross domestic product, or GDP!