The U.S. may be on the brink of a devastating market crash similar to the infamous 1987 collapse, CNBC’s Jim Cramer has warned. According to the financial expert, unless President Donald Trump reconsiders his aggressive tariff policies, Wall Street could see another Black Monday. “The 1987 scenario — where markets fell for three days and then crashed 22% on Monday — has real relevance now,” Cramer said on his Saturday program, as reported by the New York Post. “If the president doesn’t reward countries and companies that play by the rules, we could be heading toward a similar meltdown.”Cramer’s comments follow a brutal week for U.S. markets. On Friday, the S&P 500 dropped 6%, the Dow Jones fell 5.5%, and the Nasdaq slid 5.8% — the worst performance since the COVID crash.Investors are rattled by the deepening trade war, especially after China responded to Trump’s sweeping tariffs with aggressive countermeasures. Beijing announced a 34% tariff on all U.S. imports starting April 10, matching Trump’s move and escalating fears of a prolonged global economic standoff.Nathan Thooft, Chief Investment Officer at Manulife Investment Management, noted that the sheer number of countries affected by U.S. tariffs means a quick resolution is unlikely. “We expect ongoing uncertainty and market volatility for quite some time,” he said.Even a strong U.S. jobs report failed to lift investor sentiment. Wall Street's downward spiral continues to be driven by trade war fears, with few signs of relief on the horizon.President Trump has acknowledged the economic pain but insists the tariffs are part of a long-term strategy to bring manufacturing jobs back to the U.S. From his Mar-a-Lago resort, he remained upbeat, even as millions saw their investments shrink. “THIS IS A GREAT TIME TO GET RICH,” he wrote on social media before heading to his golf course.Meanwhile, the Federal Reserve faces pressure to act. While interest rate cuts could cushion the economy, Fed Chair Jerome Powell warned that tariffs could stoke inflation — potentially limiting the Fed’s ability to intervene effectively.With tensions escalating and market confidence eroding, investors are bracing for what could be a very dark Monday on Wall Street.