# U.S. grains: Trump tariff threat pushes corn, soy, wheat lower - Grainews

> U.S. corn, wheat and soybean futures fell after President Trump threatened tariffs on all Mexican goods, starting at 5% and rising until illegal migration stops. The grains had posted large monthly gains, so profit-taking added to the decline. Heavy May rains had delayed planting and may have reduced the quality of the Plains wheat crop.

- Date: 2019-05-31 · published 2019-05-31T12:00:00.000Z
- Category: trade · region US · magnitude high
- Page: https://feedsoft.ai/events/6687-u-s-grains-trump-tariff-threat-pushes-corn-soy-wheat-lower-grainews
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md), [Soybeans](https://feedsoft.ai/c/SOY.md), [Wheat (SRW)](https://feedsoft.ai/c/WHEAT.md), [Mexican Peso (MXN per USD)](https://feedsoft.ai/c/USDMXN.md)

## Why it matters

Mexico is the top foreign buyer of U.S. corn and wheat, so tariffs could cut export demand and weigh on prices. A weaker peso would also make Mexican imports of U.S. grain more expensive.

## Read by commodity

- SOY: bearish ▼
- CORN: bearish ▼
- WHEAT: bearish ▼
- USDMXN: bullish ▲

## Linked price moves

| Commodity | Date | Window | Change % | z-score | Why linked |
| --- | --- | --- | --- | --- | --- |
| WHEAT | 2019-05-31 | 5 | -13.2% | -4.8 | On May 31 Trump's Mexico tariff threat sent wheat, corn and soy lower, and profit-taking after large monthly gains added to the selling, which fits the sharp drop in the final session. |

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2025-06-02 | [U.S. grains: Soybeans fall to seven-week low; corn eases, wheat climbs - Grainews](https://feedsoft.ai/events/10946-u-s-grains-soybeans-fall-to-seven-week-low-corn-eases-wheat-climbs-grainews.md) | +0.5% | -2.2% |
| CORN | 2025-03-04 | [U.S. grains: Corn, wheat, soy futures slide as trade tensions flare](https://feedsoft.ai/events/8145-u-s-grains-corn-wheat-soy-futures-slide-as-trade-tensions-flare.md) | +3.2% | +4.7% |
| CORN | 2024-11-26 | [Corn, Soybeans Ease as Market Digests Trump Tariff Threats](https://feedsoft.ai/events/6059-corn-soybeans-ease-as-market-digests-trump-tariff-threats.md) | -0.6% | +4.7% |
| CORN | 2024-11-07 | [Trump's tariff threat puts US farm exports to China at risk](https://feedsoft.ai/events/14703-trump-s-tariff-threat-puts-us-farm-exports-to-china-at-risk.md) | -0.1% | -2.4% |
| CORN | 2024-05-16 | [Soybeans, corn, wheat continue mostly lower trend - Brownfield Ag News](https://feedsoft.ai/events/10512-soybeans-corn-wheat-continue-mostly-lower-trend-brownfield-ag-news.md) | +0.1% | +4.6% |
| SOY | 2025-06-02 | [U.S. grains: Soybeans fall to seven-week low; corn eases, wheat climbs - Grainews](https://feedsoft.ai/events/10946-u-s-grains-soybeans-fall-to-seven-week-low-corn-eases-wheat-climbs-grainews.md) | +1.5% | -1.7% |
| SOY | 2025-03-04 | [U.S. grains: Corn, wheat, soy futures slide as trade tensions flare](https://feedsoft.ai/events/8145-u-s-grains-corn-wheat-soy-futures-slide-as-trade-tensions-flare.md) | +0.2% | +1.7% |
| SOY | 2024-11-26 | [Corn, Soybeans Ease as Market Digests Trump Tariff Threats](https://feedsoft.ai/events/6059-corn-soybeans-ease-as-market-digests-trump-tariff-threats.md) | +0.6% | -1.1% |

## Sources

- grainews.ca: https://www.grainews.ca/daily/u-s-grains-trump-tariff-threat-pushes-corn-soy-wheat-lower/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.