~11 million unauthorized immigrants as of 2014 (1) Black labor participation rate at ~60% (2) Black population in US at ~45M (3) 45M * (1 - 60%) = 18M (1):

~11 million unauthorized immigrants as of 2014 (1) Black labor participation rate at ~60% (2) Black population in US at ~45M (3) 45M * (1 - 60%) = 18M (1): http://www.pewresearch.org/fact-tank/2015/11/19/5-facts-about-illegal-immigration-in-the-u-s/ http://www.pewresearch.org/fact-tank/2015/11/19/5-facts-abou... (2): http://www.thegatewaypundit.com/2014/01/black-labor-force-participation-rate-under-obama-hits-rock-bottom-lowest-level-ever-recorded/ http://www.thegatewaypundit.com/2014/01/black-labor-force-pa... (3): https://en.wikipedia.org/wiki/Race_and_ethnicity_in_the_United_States#Black_Americans https://en.wikipedia.org/wiki/Race_and_ethnicity_in_the_Unit...