``We will consider all of (the treaties) or we will consider none of them,'' Helms, chairman of the Senate Foreign Relations Committee, told a conference of conservative activists on Friday.
Helms wants amendments to the 27-year-old Anti-Ballistic Missile Treaty brought to the floor, predicting that the Republican Senate would then vote to pull the United States out of the entire treaty.
Among treaties that could become stalled if a standoff develops between Helms and the White House is the 1996 Comprehensive Nuclear Test Ban Treaty, a top administration priority.
The modifications in the ABM treaty were agreed to by President Clinton and Russian President Boris Yeltsin but have not been sent to the Senate.
Helms and other conservatives consider the pact dead anyway, because the Soviet Union with whom it was negotiated no longer exists.
Helms told the Conservative Political Action Conference that the entire pact belongs ``in the dustbin of history.''
The treaty is standing in the way of proceeding on a GOP plan to establish a national missile defense system.
Such a system is prohibited by terms of the existing ABM treaty -- and the administration contends that Moscow would have to agree to any move by the United States to set up such a system.
``I say baloney,'' Helms said to renegotiating the treaty with the Russians. ``Not on my watch, Mr. President.''
Helms also demanded the administration submit another treaty likely to be rejected: a 1997 environmental pact signed by the United States and 37 other industrial nations in Kyoto, Japan, to limit gases that contribute to global warming.
Helms, who is known for holding up measures and nominations, opposes that treaty, as well.
In 1997, Helms single-handedly blocked the nomination of former Massachusetts Gov. William Weld, a fellow Republican, to be ambassador to Mexico by refusing to hold hearings.
If that earned him the nickname ``Senator No,'' so be it, Helms told the standing-room-only audience.
``Saying no is part of the job of being chairman of the Senate Foreign Relations Committee,'' he said, ``and I plan to say `no' to a few more things this year.''
But Helms said he would not criticize recent steps taken by the administration to permit more humanitarian aid to reach Cuba, even though he strongly supports a continuation of a trade embargo against Fidel Castro's regime.
``I'll (also) go along with letting the Baltimore Orioles play exhibition games against the Cuban national team -- but on one condition,'' Helms said. ``I want the Cuban national team to come to Baltimore to play the Orioles first and then the Orioles can go to Havana. Because when the O's get to Cuba, there will be no one to play them.''
© Copyright 1999 The Associated Press