Brent crude oil prices, a benchmark for global trading, climbed on Wednesday.
The economy is driving young Americans' enlistments, according to Pentagon data.
Colombia's president has asked his ally Trump to suspend tariffs to help the South American nation recover from a powerful earthquake that killed at least 289 people.
The U.S. lost 23,000 jobs in July, government data showed.
President Trump is making a rare visit to California and Nevada this week to try to draw contrasts with Democrats on the economy.
Oil prices surged more than 6% on Thursday.