The Washington Post Û¢ Û¢ ÐÊ R 1  
Gov. Mark White, left, House Speaker Gib Lewis and Lt. Gov. Bill Hobby discuss legislative proposals earlier this week.</br></br>The White House announced yesterday in Santa Barbara that President Reagan and his wife, Nancy, will give a nationally televised speech on drugs Sept. 14, shortly after Congress returns from recess to consider sweeping antidrug legislation.</br></br>ÛÏWhen the chapter on how America won the war on drugs is written,Û a White House statement said, ÛÏThe ReagansÛª speech is sure to be viewed as a turning point.Û</br></br>But in campaigns across the country and in political caucuses on Capitol Hill, lawmakers of both parties were already poised to run with the issue, and the Democratic-con-trolled House was preparing for action within days after its return from recess.</br></br>After a summer of intense publicity about drug abuse, Congress and the president are heading back to Washington next week primed to seize the drug issue and, if possible, gain credit in a midterm election year for doing something about it.