President Donald Trump announced Monday the U.S. will be restoring tariffs on Brazilian and Argentine steel and aluminum, potentially disrupting the recently improving U.S. trade relationships with Brazil.

An agreement 24 years in the making is set to come to fruition as the Brazilian government prepares to implement a tariff rate quota to allow an increase in duty-free wheat imports.

Farmers were hoping for a speedy resolution to the U.S.-China trade war, but the lack of such a resolution has sent them scrambling to come up with a new home for exports once gobbled up by China.

As much as growers long for an end to the trade war with China, there are long-term threats to demand for corn, soybeans and other crops that could depress commodity prices for years to come and lead to calls for higher government spending, economists say.

Much attention has been focused of late on the implications for Latin America of the US-China trade war, including in the agricultural sector, where Brazil has seemingly benefitted from growing demand for its abundant soy. Recent tariffs have pushed China to intensify trading with Latin America, contributing to the expectation that Brazil will become the leading soybean exporter for 2019-20, a distinction previously held by the US.

While the rest of the country has enjoyed an economic resurgence in recent years, the farm economy has slipped into a recession as global commodity prices precipitously fall.