Even with the latest developments out of Australia earlier today, AUD/USD is finding it tough to make any meaningful push higher. The pair continues to trade around 0.7030 on the day, once again knocking on the door of key technical resistance near its 100-day and 200-day moving averages.The latest Australia CPI report was hotter than expected, with trimmed mean inflation rising to 3.7% against expectations of 3.6%. That certainly doesn't make the RBA's job any easier, especially with oil prices adding to inflation pressures.And RBA governor Bullock didn't exactly mince her words either, warning that inflation remains "far too high". Her comments pretty much reinforces the narrative that the central bank is almost certainly poised for another rate hike next week, giving the aussie a fundamental reason to hold firmer. Or at least that is the case in theory.But looking at the AUD/USD chart, buyers still have some convincing to do.The double-bottom pattern near 0.6900 has set the pair up for a decent rebound in the past week or so, with the latest run up testing key resistance around 0.7030-50. And that is where the 100-day (red line) and 200-day (blue line) moving averages are starting to converge around. That makes for a rather stubborn technical hurdle, with buyers repeatedly struggling to establish a firm break above the region since last week.A sustained push above the 200-day moving average at 0.7054 would be a more encouraging development, potentially opening the door towards 0.7100 before the descending trendline resistance closer to 0.7220 comes into focus next.On the downside, the 0.7000 level remains the first key support to watch, followed by the 0.6900-0.6920 region and then the rising trendline support near 0.6900 as well.So, what's next for the pair this week?Well, the Fed could be one to have the bigger say in what happens next. A more hawkish message from Warsh & co. could give the dollar another lift, making it more difficult for AUD/USD to chase a break higher.And with broader risk sentiment still looking fragile, particularly around tech stocks, the aussie might not exactly get much help from that side of the equation either. It all will depend on how big tech earnings play out later in the day, with watchful eyes on Microsoft and Alphabet earnings after the closing bell. That will also in turn have some potential spillover impact on how the bond market reacts.In other words, there's still a lot to play for in broader markets for the second half of the week.So even if the domestic story may be turning more supportive for the aussie, I wouldn't be convinced that AUD/USD can sustain the next leg higher until buyers can clear the resistance zone highlighted above. This article was written by Justin Low at investinglive.com.