Final answer:
No, when it is summer in the United States, Earth is not closest to the Sun. The Earth's orbit is slightly elongated, so it comes closest to the Sun in the first week of January, which is winter in the Northern Hemisphere.
Step-by-step explanation:
No, it is not true that when it is summer in the United States, Earth is closest to the Sun. The Earth's orbit is slightly elongated, so it comes closest to the Sun in the first week of January. This is actually during winter in the Northern Hemisphere. The seasons are primarily caused by the tilt of Earth's axis, not the distance from the Sun.