Futures rise as markets shrug off Trump's latest tariff threat; steelmakers jump | Reuters

1. U.S. stock index futures increased, led by steelmakers and potential tariff impacts. 2. Trump announced additional 25% tariffs on steel and aluminum imports. 3. Microsoft and other big techs rose about 0.6% amid trade concerns. 4. Federal Reserve's policies on interest rates remain uncertain after mixed employment report. 5. Market volatility expected as Trump's tariffs and Fed's decision approach.