Headlines change all the time. The way that newspapers choose their headlines is by the time of year and what the people will respond to. The people generally try to be more aware of policy and government when it is an election year so the papers will reflect that. It will sell more.
Of course the headline "Corporate America's 'report cards' are strong" is politically motivated because it's an election year. Politicians are experts in using the media in sending their message. These headlines are no different and are an attempt to gather favor for those running for office. Headlines should always be taken with a grain of salt for this reason.
All anyone has to do is look at the SEC 10Q reports for publicly traded companies in order to see that 'Corporate American' is in fact reporting record income and making record profits off of that income. There in no political motivation in the headline, because NO party can claim credit because of the gridlock in Washington between the Executive branch and the Congress.
The quarter two results are in and corporate earnings are stronger. I don't think Wall Street would make that up just for an election year. I think we will still see a correction in the stock market and it will have nothing to do with politicians, this has been coming for a long time.