Lost amid headlines about the coronavirus pandemic and the seemingly unstoppable stock market rally, has been the monthslong escalation of tensions in the U.S.-China trade war —  and it's likely here to stay.Why it matters: The tariffs continue to impress a sizable tax on U.S. companies and consumers, adding additional costs and red tape for small businesses, farmers, manufacturers and households trying to stay afloat amid the pandemic."The trade war has been quietly intensifying," Stephen Gallagher, chief economist at Société Générale, tells Axios.Driving the news: White House chief of staff Mark Meadows said late Wednesday that administration officials are "looking at the national security risk as it relates to TikTok, WeChat and other apps" from China and could announce bans in the coming weeks.That followed remarks from President Trump on Tuesday that he had no plans for "phase two" trade deal negotiations and was "not interested right now in talking to China.”What's happening: The "phase one" deal was cheered by investors as a positive first step, because it stopped a tit-for-tat tariff escalation that was poised to add a tax to nearly every product traded between the U.S. and China.However, it did nothing about tariffs on hundreds of billions of dollars of Chinese imports already in place that are paid by U.S. companies.Why you'll hear about this again: With the U.S. ratcheting up the pressure, there is a decreasing likelihood China lives up to its "phase one" agreement.That means a diminished outlook for industries that were counting on the $200 billion in increased purchases of U.S. agriculture, energy and manufacturing after a brutal 2019.Remember: The primary cost of tariffs isn't the tariffs themselves, but the deadweight loss of consumers buying more expensive, or less efficient, products.The trade war also is a major factor pushing businesses to pull supply chains and production out of China, increasing costs and uprooting longstanding relationships.For big companies, this will weigh on margins; for small companies, it could mean going out of business.Don't sleep: Deutsche Bank’s global head of tech strategy Apjit Walia warns that the demand disruption, supply chain upheaval and bifurcated tech standards from a "Tech Cold War" between the U.S. and China could cost the sector more than $3.5 trillion over the next five years.What's next: Even if Trump loses in November, investors don't expect a significant change in the U.S. approach to China given Joe Biden's recent rhetoric and bipartisan legislation condemning China for its treatment of Uighur Muslims and restrictions on public companies.