Washington (CNN) — A defiant Barack Obama dives into what could be a defining period of his presidency this week, after repeatedly enraging Republicans from afar during his Asia tour.
Obama faces showdowns with the GOP over immigration, the Keystone XL pipeline and his drive for a nuclear deal with Iran, all of which have huge consequences for his political legacy.
Far from being chastened by the Republican capture of the Senate, Obama is setting out to prove he is no lame duck and can still set the agenda.
But the GOP insists the mid-terms gave them a share of power in Washington, and believe Obama risks usurping his authority and even the constitution with his bold new strategy.
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