April 2 (Reuters) - Futures for Canada's main stock

index fell on Wednesday after two straight days of gains for the

index, as investors turned cautious ahead of U.S. President

Donald Trump's planned unveiling of new trade tariffs later in

the day.

The futures on the S&P/TSX index were down 0.5% at

6:55 a.m. ET (1055 GMT).

Trump is set to announce sweeping reciprocal tariffs on

global trading partners at 1600 ET in what the White House has

dubbed "Liberation Day," threatening to disrupt decades of

established trade practices.

The tariffs, which will take effect immediately upon

announcement, are expected to trigger price increases and prompt

retaliatory measures from affected countries.

Canadian Prime Minister Mark Carney and Mexican President

Claudia Sheinbaum spoke on Tuesday about Canada's plan to "fight

unjustified trade actions" by the U.S., Carney's office said.

U.S. companies say a "Buy Canadian" movement is already

making it harder for their products to reach that country's

shelves.

A separate 25% global tariff on auto imports will take

effect on April 3.

In commodities, oil prices steadied on fears that a global

trade war could dampen demand for crude.

Gold prices held firm after jumping to an all-time high in

the previous session.

Copper prices rose and tin prices extended a rally to its

highest in nearly three years on supply fears.

Canada's main stock index rose on Tuesday, boosted by gains

in energy and technology shares, but the move was limited ahead

of the new trade tariffs.

In corporate news, investment firm Brookfield has

resumed takeover talks with Spanish pharmaceuticals company

Grifols, news website El Confidencial reported on

Wednesday.

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