They only meant to capture a sweet family photo beneath the blooming cherry blossoms, the Washington Monument towering peacefully in the background. As Portia posed little Belle and Preston near the Tidal Basin, she thought the only challenge would be keeping the kids still. But the real surprise wandered casually into the frame. It wasn’t until afterward, when she asked her husband what he’d been muttering, that she learned the truth: “That was President Obama!” He had walked right behind them, completely by accident, turning an ordinary picture into an unforgettable one. Continues…