A $13 billion proposal could lay high-speed tracks in the midwest, California, and Florida.
The speech underlined the president's desire to elevate public discourse on issues such as abortion in order to find common ground.
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.
"Cowboy Blob" and other online commentators fill the press box at the National Rifle Association convention.
Governor Jon Huntsman of Utah is a Republican moderate and China expert seen as a possible presidential candidate.
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.
Some Guantánamo detainees – with new legal protections for statements made under interrogation – will be tried.
Opposition to his appearance at Sunday's commencement puts new attention on Catholic sensibilities – and on the president's stance on abortion and stem-cell research.