President Trump, along with Cotton and Perdue, will make the announcement Wednesday morning at the White House. Arkansas's Tom Cotton and Georgia's David Perdue have been coordinating with the White House on the legislation, which may propose to cut legal immigration levels by about half by 2027.
Top White House aides have been working with Perdue and Cotton on the bill that, if passed, would dramatically remake the current immigration system, which allows a number of ways to bring family members to the U.S. along with job-based visas.
The proposal has been praised by hard-line immigration groups, including NumbersUSA and the Federation of Immigration Reform, that advocate for lower immigration levels.
But backers of stricter immigration limits say allowing unskilled people into the country acts to keep wages low, especially for workers with just a high-school degree.
One of President Trump's campaign promises was to reduce immigration, illegal and legal. John McCain of Arizona and Lindsey Graham of SC, and many Senate Democrats oppose making partial changes to immigration law without creating a pathway to legal status for immigrants who arrived in the country illegally and put down roots. But Trump's support could help the measure gain traction.
"What I'd like to do is a comprehensive immigration plan", Trump told reporters aboard Air Force One in July.
At a rally in OH last week, Trump praised Cotton and Perdue and said he was working with the senators to replace "today's low-scale system, just a bad system where anybody comes in".
"Instead of today's low-skilled system - which is a bad system where anyone comes in, people who have never worked, people that are criminals, anyone comes in - we want a merit-based system", he said at an OH rally last week. "We want it merit-based", Trump said.
Even with Trump's support, the bill faces an uphill climb in the GOP-controlled Senate.