President Donald Trump, flanked by Sen. Tom Cotton, R- Ark., left, and Sen. David Perdue, R-Ga., speaks in the Roosevelt Room of the White House in Washington, Wednesday, Aug. 2, 2017, during the unveiling of legislation that would place new limits on legal immigration. less President Donald Trump, flanked by Sen. Tom Cotton, R- Ark., left, and Sen. David Perdue, R-Ga., speaks in the Roosevelt Room of the White House in Washington, Wednesday, Aug. 2, 2017, during the unveiling of ... more WASHINGTON - President Donald Trump's endorsement of legislation to restrict and reshape legal immigration is based on some shaky assumptions, such as the idea that low-wage green-card holders are flooding in to take jobs from Americans.