Paula DittrickPotential US tax increases related to oil and natural gas operations are likely to vary depending on how and when Congress pursues other tax items on its agenda, now expected for sometime after the upcoming election, the Deloitte Center for Energy Solutions said.Congress has a long list of unfinished tax business. In addition, energy and jobs legislation remain on the agenda. Lawmakers postponed voting on taxes until after the election. Congress, adjourning for the midterm election, is scheduled to reconvene Nov. 15.The US Senate plans to handle several nontax issues before the Thanksgiving holiday next month, and a vote on taxes might not come until December. A National Com...