Welcome to OpenStreetMap! The tags you've used on this railway make it appear as if it currently exists. You should tag it as proposed (ie railway=proposed) to be more accurate, otherwise it is likely to be deleted. Even with that tag, given it is a very long range proposal, you may want to check with others about the best ways to handle this, for example on the OSM US Slack. More info specific to railway tagging is on the wiki: https://wiki.openstreetmap.org/wiki/Railways  Happy mapping!