State of the UnionThe U.S. Senate is warning the Obama administration that it is poised to veto a final nuclear deal with the Iranians and impose harsher sanctions on Tehran, according to a letter sent late Wednesday to President Obama. Nearly half of the Senate has signed onto a letter promising to reject a “weak and dangerous deal” with Iran as final negotiations in Vienna approach their Nov. 24 deadline. Sens. Marco Rubio (R., Fla.) and Mark Kirk (R., Ill.) authored the letter. The senators warn that the Obama administration is close to inking a deal that will permit Iran to continue the most controversial aspects of its nuclear program and enable Tehran to build a nuclear weapon in the near future, according to a copy of the letter obtained by the Washington Free Beacon and signed by all 43 Republican senators who backed the Mendendez-Kirk sanctions legislation killed earlier this year by the White House. More