var dataset = ee.ImageCollection('USDA/NASS/CDL')
              .filter(ee.Filter.date('2002-12-31', '2018-12-31'))
              // This filter doesn't work.
              .filter(ee.Filter.eq("id", "USDA/NASS/CDL/2005b").not());

// Allows me to see number of elements in the query in the console.
print(dataset)

var cropLandcover = dataset.select('cropland');
Map.setCenter(-100.55, 40.71, 4);
Map.addLayer(cropLandcover, {}, 'Crop Landcover');