The U.S. should not have to rely on OPEC for energy, says former Sen. Judd Gregg

Heidi Heitkamp, former U.S. Senator from North Dakota, and Judd Gregg, former U.S. Senator from New Hampshire, join CNBC's 'Squawk Box' to discuss the U.S.'s relationship with oil-producing nations, the Biden administration's energy policy, and more.