WASHINGTON — For months, government lawyers and economists worked behind the scenes to develop a trade case against China. Then last month came a eureka moment: They confirmed the existence of a Chinese subsidy program for automobiles and parts that in their view violated international trade rules. They finished a complaint, circulated it among agencies and proposed a time frame for filing.  President Obama during a campaign event in Columbus, Ohio, on Monday, the day he announced a trade complaint over Chinese automobile subsidies that could affect the state.  A one-stop destination for the latest political news â from The Times and other top sources. Plus opinion, polls, campaign data and video.  That’s when President Obama’s political team took over, providing a textbook example of how an incumbent can harness the power of the office to bolster the case for re-election. Rather than leave it to the trade office to announce the complaint, Mr. Obama decided to do it himself. Aides scheduled it for a campaign swing to the auto-dependent battleground state of Ohio, leaked it to the state’s largest newspaper, then sent other journalists a link to the resulting story plus voter-friendly talking points.  Every president lives at the intersection of policy and politics, never more so than during a campaign season. Locked in a tight race with Mitt Romney, Mr. Obama and his team have been pulling every lever of the federal government within reach, announcing initiatives aimed at critical constituencies, dispatching cabinet secretaries to competitive areas, coordinating campaign events to match popular government actions and forestalling or even reversing other government decisions that could hurt the president’s chances of a second term.  On Friday, Mr. Obama will designate Chimney Rock in Colorado a national monument, preserving thousands of acres and aiding tourism in another swing state, a decision shared Wednesday with a Denver newspaper. When he flew to Iowa last month, Mr. Obama arrived just as his administration announced drought relief for farmers and released a report promoting his support for wind power. After critics attacked him for inhibiting oil and gas production by considering an obscure lizard for the endangered species list, the administration decided it wasn’t so endangered after all.  Some of the most significant policy announcements of recent months were keyed to important voter blocs. Mr. Obama reversed position to endorse same-sex marriage before attending a big-dollar fund-raiser with gay and lesbian leaders. Just before addressing a national Latino organization, he used executive power to allow illegal immigrants to remain in the country if they had come as children.  White House officials acknowledged that they calibrate announcements and trips to maximize the advantages of incumbency but said the policy decisions themselves were made on substance. They also noted that while cabinet secretaries travel to swing states, they also travel to states that are not competitive. And they said that on some level it is impossible to separate the candidate from the president.  “The president is not going to put off what he believes are important actions, such as protecting jobs for American workers, until after the election,” said Eric Schultz, a White House spokesman. “These decisions are made on the merits by professionals with the relevant policy expertise, are often months in the making and always reflect the president’s longstanding positions.”  Republicans, naturally, see it differently. “He looks like he is aiding his re-election with the power of the Oval Office,” said Matt Schlapp, who was White House political director for President George W. Bush. “He looks worried, reactive. It’s fair to ask that if this China decision was for policy issues alone then why wait until right before the first debate to announce it?”  Each White House tests the boundaries. President Bill Clinton used the Lincoln Bedroom to entertain financial donors. Mr. Bush’s strategist, Karl Rove, oversaw an “asset deployment team” that managed trips and grant announcements. Both got in trouble. Mr. Clinton’s fund-raising triggered Congressional investigations while the Office of Special Counsel, an independent agency, concluded that the Bush White House violated federal law by creating a “political boiler room” coordinating campaign activities.  The same agency determined last week that Kathleen Sebelius, the health and human services secretary, violated the law by advocating Mr. Obama’s re-election during an official trip to North Carolina. The trip was reclassified to political and the cost reimbursed. “Keeping the roles straight can be a difficult task, particularly on mixed trips that involve both campaign and official stops on the same day,” Ms. Sebelius wrote investigators.
Some of President Obamaâs most significant recent policy announcements have been keyed to voter blocs, as his campaign seeks to make the most of his incumbency.