US stock futures edged lower on Tuesday as Wall Street returned from a holiday-extended weekend, with elevated oil prices keeping inflation risks and interest rate concerns in focus. Oil prices climbed further after the US and Iran exchanged strikes over the weekend. Investors also faced mounting trade tensions as Canada’s retaliatory tariffs on roughly $20 billion worth of US goods come into effect on Tuesday. On the monetary policy front, markets are pricing in about a 60% probability that the Federal Reserve will increase interest rates by 25 basis points next week. In corporate developments, Uber hired banks to meet with investors this week ahead of a planned debut euro bond sale. Meanwhile, Novo Nordisk halted two additional trials of its experimental heart disease drug, dealing another setback to the treatment’s prospects.