The White House backed off from the steepest levies, as the costs of an all-out trade war with China threatened global economic growth.

Brazil signed protocols with China on Tuesday to allow exports of an ethanol by-product used in animal feed, challenging U.S. dominance in the market amid the ongoing China-U.S. trade standoff.

Tariffs aren’t the only battleground to keep an eye on in the trade war between the US and China. Access to Wall Street could be used as a lever in the negotiations, leaving almost 300 Chinese companies listed in the US at risk of being removed from American stock exchanges.

In a significant step toward easing trade tensions, China on Wednesday lifted export restrictions on rare earths and military-use technologies for 28 U.S. entities. The move comes just two days after Washington and Beijing struck a breakthrough agreement to temporarily lower tariffs,

Wall Street was on track to open with losses as the initial euphoria over the 90-day truce in the U.S.-China trade war faded.

Both nations pledged to cut their broad, ballooning tariffs after weekend talks. US tariffs dropped to 30% from 145%, while China’s moved to 10% from 125%, per a joint statement

President Donald Trump‘s top aides spilled the beans Wednesday about how they convinced him to back off his sky-high tariffs on China. They boasted to The Washington Post that they used data showing how his base of support—in particular truckers and longshoremen—would be hurt by the levies to change his mind.