ASX to slide; Wall Street retreats from record high

Summary

• ASX futures were down a single point at 8.30am AEDT, hinting at a another weak start for the local sharemarket. The index retreated from 10-month highs on Monday 
• US markets fell from record levels overnight with earnings season looming, and turmoil in Washington causing anxiety 
• Iron ore slipped 0.5% to $US172.13 a tonne, gold dropped 0.3% to $US1843.70 an ounce, Brent crude fell 0.6% to $US55.66 a barrel, and US oil was 0.1% down at  $US52.20 a barrel
• Bitcoin dropped as much as 22% to a low of $US30,200 overnight. The cryptocurrency was last at $US34,170.