Ryan Fournier, chairman of the organization Students For Trump, brought the products to public attention with a tweet Tuesday evening.
Fournier's message soon went viral, leading to angry consumers threatening to boycott the company.
As of Tuesday afternoon, "Impeach 45" items were no longer found on the superstore's online platform.
Calls for a boycott against Walmart are mounting over items promoting the impeachment of President Donald Trump sold on the retailer's website. While the Centerbrook, Connecticut-based company sells hundreds of shirts, hats, underwear and Halloween costumes via Walmart, it also runs its own website and sells similar merchandise on Amazon.
Paul George has agreed to a four-year max contract with Thunder
George is believed to have given consideration to the Philadelphia 76ers and the Los Angeles Lakers , as well as the Thunder . The Clippers have moved on and will meet with unrestricted free-agent guard Avery Bradley on Sunday, according to an official.
A spokesman for Wal-Mart didn't immediately respond to requests for comment.
The line of apparel also sells on Amazon.com and through Old Glory's own website.
"These items were sold by third party sellers on our open marketplace, and were not offered directly by Walmart". It appears that Walmart has now taken down the listing for the shirt, caving in to the pressure. "We're removing these types of items pending review of our marketplace policies".
Walmart has caused outrage over its apparel before. It pulled merchandise branded with "Bulletproof - Black Lives Matter" after complaints from the National Fraternal Order of Police, and previous year it removed T-shirts emblazoned with "Rope. Tree. Journalist. Some assembly required", after facing massive backlash.