LONDON/NEW YORK, Jan 20 (Reuters) - The dollar extended its slide while crude prices curtailed their losses after U.S. President Donald Trump said on Monday he would tariff and tax countries to enrich Americans, overhaul the trade system and declare a national energy emergency.

COMMENTS:

JAMIE COX, MANAGING PARTNER, HARRIS FINANCIAL GROUP

"Energy prices are going to come down in big way — consumers will rejoice in the savings and the inflation data in 6-7 months is going to look far better."

NIGEL GREEN, CEO, DEVERE GROUP

"The energy sector will undoubtedly be the most immediate beneficiary of this sweeping policy shift."

"Companies involved in oil and gas exploration, extraction, and infrastructure stand to gain as regulatory barriers are dismantled and investment in domestic production soars. Shares of U.S. energy giants and mid-cap firms are likely poised for significant upward momentum as the markets price in increased output and profitability."

"Global oil prices, already sensitive to geopolitical developments, could see sharp adjustments."

GABRIELA SILLER PAGAZA, DIRECTOR FOR ECONOMIC ANALYSIS, GRUPO FINANCIERO BASE

"At the beginning of Trump's speech, the (Mexican peso) exchange rate was at 20.5751...At the end of the speech, it fell to 20.5289 pesos per dollar, which implies an appreciation of 4.6 cents or 0.22%, since there was no announcement of tariffs."

MARC CHANDLER, CHIEF MARKET STRATEGIST, BANNOCKBURN GLOBAL FOREX, NEW YORK

"There is a relief rally in foreign currencies, right now."

"Even though Trump did not specify, it's very clear that when he says that the U.S. is going to be a big auto manufacturer, he's talking about tariffs. So whether he imposes them in Day 1 or Day 5 or Day 10, I'm not sure it makes that much of a difference."

"The idea that he is going to be able to raise $2 trillion in tariffs seems to be an exaggeration. The U.S. imports only $1 trillion of goods, so what does he mean that he will be able raise $2 trillion and over what time period? It doesn't make sense."

(Reporting by Saeed Azhar, Aida Pelaez-Fernandez, Dhara Ranasinghe, and Gertrude Chavez-Dreyfuss; Compiled by Karin Strohecker; Editing by xxx)

((amanda.cooper@thomsonreuters.com; +442031978531; Bluesky: @acoops.bsky.social))