How The Pandemic And Trump's Efforts To Exclude Undocumented Immigrants Could Complicate The 2020 Census (On Point)

On Tuesday, President Trump signed a memorandum calling for the exclusion of undocumented immigrants from the census count that determines House representation. But the power to make that decision, according to the Constitution, belongs to Congress. So what impact will his demand have?
Interview:
https://www.wbur.org/onpoint/2020/07/23/trump-immigrants-census-complication