Is the JPG CMYK, RGB or Grayscale and was it saved with an embedded profile?
It's RGB and it's a photo I downloaded from istockphoto.com. Should I turn off any color management that InDesign or Photoshop is doing and open the jpg in Photoshop and save it as a psd file and link that way? I noticed when I turned off the color management and conversions that the image stayed white. What are the Adobe programs doing that convert images to yellow?
You can't turn of color management—even with the Emulate ID 2 preset the colors are being managed you just don't know how.
When you save the istockphoto make sure to include its profile:
Then in Indesign select the image and double-check that its profile is assigned. With the image selected choose Object>Image Color Settings:
Also, when you place RGB and choose Overprint Preview, or if there's transparency on the page, the preview shows how the color will get converted into your document's CMYK space. If the RGB colors or out-of-gamut to CMYK you might see I shift in colors, but I wouldn't expect to see whites turn yellow