A $13 billion proposal could lay high-speed tracks in the midwest, California, and Florida.
When the leaders meet Monday, the US will push for progress toward a Palestinian state, while Israel will ask for a harder line on Iran.
Governor Jon Huntsman of Utah is a Republican moderate and China expert seen as a possible presidential candidate.
Israel's image abroad is a bit tattered. Can Eurovision come to the rescue?
Ahead of his Monday meeting with Obama, who supports a two-state solution, the Israeli prime minister wants to make Iran's nuclear ambitions the focus of regional diplomacy.
Western nations call it a terrorist organization. To Palestinians, it's a legitimate elected government, a resistance movement, or an oppressive usurper. So just what is Hamas?